157240269 has 12 divisors (see below), whose sum is σ = 233263836. Its totient is φ = 101993472.

The previous prime is 157240253. The next prime is 157240271. The reversal of 157240269 is 962042751.

157240269 is a `hidden beast` number, since 157 + 240 + 269 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 122877225 + 34363044 = 11085^2 + 5862^2 .

It is not a de Polignac number, because 157240269 - 2⁴ = 157240253 is a prime.

It is a super-2 number, since 2×157240269² = 49449004390384722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157240229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235764 + ... + 236429.

It is an arithmetic number, because the mean of its divisors is an integer number (19438653).

Almost surely, 2^157240269 is an apocalyptic number.

It is an amenable number.

157240269 is a deficient number, since it is larger than the sum of its proper divisors (76023567).

157240269 is a wasteful number, since it uses less digits than its factorization.

157240269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472236 (or 472233 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 157240269 is about 12539.5481976027. The cubic root of 157240269 is about 539.7441277485.

The spelling of 157240269 in words is "one hundred fifty-seven million, two hundred forty thousand, two hundred sixty-nine".