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742139 = 29157163
BaseRepresentation
bin10110101001011111011
31101201000122
42311023323
5142222024
623523455
76210446
oct2651373
91351018
10742139
11467642
122b958b
131cca48
1415465d
15e9d5e
hexb52fb

742139 has 8 divisors (see below), whose sum is σ = 777360. Its totient is φ = 707616.

The previous prime is 742127. The next prime is 742151. The reversal of 742139 is 931247.

It is an interprime number because it is at equal distance from previous prime (742127) and next prime (742151).

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 742139 - 28 = 741883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4472 + ... + 4634.

It is an arithmetic number, because the mean of its divisors is an integer number (97170).

2742139 is an apocalyptic number.

742139 is a deficient number, since it is larger than the sum of its proper divisors (35221).

742139 is a wasteful number, since it uses less digits than its factorization.

742139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 1512, while the sum is 26.

The square root of 742139 is about 861.4748980673. The cubic root of 742139 is about 90.5374833283.

The spelling of 742139 in words is "seven hundred forty-two thousand, one hundred thirty-nine".

Divisors: 1 29 157 163 4553 4727 25591 742139