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142192631 = 755736469
BaseRepresentation
bin10000111100110…
…10111111110111
3100220120010121202
420132122333313
5242400131011
622035403115
73344421530
oct1036327767
9326503552
10142192631
117329a479
123b75349b
13235c7369
1414c55687
15c73b23b
hex879aff7

142192631 has 8 divisors (see below), whose sum is σ = 162802080. Its totient is φ = 121657248.

The previous prime is 142192613. The next prime is 142192657. The reversal of 142192631 is 136291241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-142192631 is a prime.

It is a super-2 number, since 2×1421926312 = 40437488621404322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142192594 and 142192603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142192931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14336 + ... + 22133.

It is an arithmetic number, because the mean of its divisors is an integer number (20350260).

Almost surely, 2142192631 is an apocalyptic number.

142192631 is a deficient number, since it is larger than the sum of its proper divisors (20609449).

142192631 is an equidigital number, since it uses as much as digits as its factorization.

142192631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37033.

The product of its digits is 2592, while the sum is 29.

The square root of 142192631 is about 11924.4551657508. The cubic root of 142192631 is about 521.9461478578.

The spelling of 142192631 in words is "one hundred forty-two million, one hundred ninety-two thousand, six hundred thirty-one".

Divisors: 1 7 557 3899 36469 255283 20313233 142192631