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742120469 = 2953482837
BaseRepresentation
bin101100001110111…
…101110000010101
31220201102121220022
4230032331300111
53004440323334
6201350114525
724250630346
oct5416756025
91821377808
10742120469
113509a9102
1218864ba45
13ba99914c
14707c00cd
154524282e
hex2c3bdc15

742120469 has 8 divisors (see below), whose sum is σ = 782197560. Its totient is φ = 703009216.

The previous prime is 742120451. The next prime is 742120517. The reversal of 742120469 is 964021247.

It can be written as a sum of positive squares in 4 ways, for example, as 283518244 + 458602225 = 16838^2 + 21415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 742120469 - 216 = 742054933 is a prime.

It is a super-2 number, since 2×7421204692 = 1101485581017559922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742123469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239882 + ... + 242955.

It is an arithmetic number, because the mean of its divisors is an integer number (97774695).

Almost surely, 2742120469 is an apocalyptic number.

It is an amenable number.

742120469 is a deficient number, since it is larger than the sum of its proper divisors (40077091).

742120469 is a wasteful number, since it uses less digits than its factorization.

742120469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482919.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 742120469 is about 27241.8881320660. Note that the first 3 decimals coincide. The cubic root of 742120469 is about 905.3672975699.

The spelling of 742120469 in words is "seven hundred forty-two million, one hundred twenty thousand, four hundred sixty-nine".

Divisors: 1 29 53 1537 482837 14002273 25590361 742120469