157404742 has 16 divisors (see below), whose sum is σ = 259066512. Its totient is φ = 71132320.

The previous prime is 157404727. The next prime is 157404749. The reversal of 157404742 is 247404751.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 157404698 and 157404707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157404749) 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, 16873 + ... + 24484.

It is an arithmetic number, because the mean of its divisors is an integer number (16191657).

Almost surely, 2^157404742 is an apocalyptic number.

157404742 is a deficient number, since it is larger than the sum of its proper divisors (101661770).

157404742 is a wasteful number, since it uses less digits than its factorization.

157404742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41543.

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 157404742 is about 12546.1046544336. The cubic root of 157404742 is about 539.9322525891.

Subtracting 157404742 from its reverse (247404751), we obtain a palindrome (90000009).

The spelling of 157404742 in words is "one hundred fifty-seven million, four hundred four thousand, seven hundred forty-two".