157751742 has 8 divisors (see below), whose sum is σ = 315503496. Its totient is φ = 52583912.

The previous prime is 157751731. The next prime is 157751747. The reversal of 157751742 is 247157751.

It is a happy number.

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

157751742 is an admirable number.

It is a super-2 number, since 2×157751742² = 49771224208069128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 157751742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157751747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13145973 + ... + 13145984.

It is an arithmetic number, because the mean of its divisors is an integer number (39437937).

Almost surely, 2^157751742 is an apocalyptic number.

157751742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157751742 is a wasteful number, since it uses less digits than its factorization.

157751742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26291962.

The product of its digits is 68600, while the sum is 39.

The square root of 157751742 is about 12559.9260348141. The cubic root of 157751742 is about 540.3287230329.

The spelling of 157751742 in words is "one hundred fifty-seven million, seven hundred fifty-one thousand, seven hundred forty-two".