315450240442 has 16 divisors (see below), whose sum is σ = 489513542760. Its totient is φ = 152279543808.

The previous prime is 315450240439. The next prime is 315450240463. The reversal of 315450240442 is 244042054513.

It can be written as a sum of positive squares in 4 ways, for example, as 249801039601 + 65649200841 = 499801^2 + 256221^2 .

It is a super-2 number, since 2×315450240442² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315450240398 and 315450240407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344778 + ... + 1561834.

Almost surely, 2^315450240442 is an apocalyptic number.

315450240442 is a deficient number, since it is larger than the sum of its proper divisors (174063302318).

315450240442 is a wasteful number, since it uses less digits than its factorization.

315450240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242145.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 315450240442 its reverse (244042054513), we get a palindrome (559492294955).

The spelling of 315450240442 in words is "three hundred fifteen billion, four hundred fifty million, two hundred forty thousand, four hundred forty-two".