157737242 has 8 divisors (see below), whose sum is σ = 254806356. Its totient is φ = 72801792.

The previous prime is 157737241. The next prime is 157737299. The reversal of 157737242 is 242737751.

It can be written as a sum of positive squares in 2 ways, for example, as 143304841 + 14432401 = 11971^2 + 3799^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 157737196 and 157737205.

It is not an unprimeable number, because it can be changed into a prime (157737241) 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 3 ways as a sum of consecutive naturals, for example, 3033383 + ... + 3033434.

Almost surely, 2^157737242 is an apocalyptic number.

157737242 is a deficient number, since it is larger than the sum of its proper divisors (97069114).

157737242 is a wasteful number, since it uses less digits than its factorization.

157737242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066832.

The product of its digits is 82320, while the sum is 38.

The square root of 157737242 is about 12559.3487888505. The cubic root of 157737242 is about 540.3121674702.

The spelling of 157737242 in words is "one hundred fifty-seven million, seven hundred thirty-seven thousand, two hundred forty-two".