315102142 has 4 divisors (see below), whose sum is σ = 472653216. Its totient is φ = 157551070.

The previous prime is 315102133. The next prime is 315102169. The reversal of 315102142 is 241201513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241201513 = 7 ⋅34457359.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78775534 + ... + 78775537.

It is an arithmetic number, because the mean of its divisors is an integer number (118163304).

Almost surely, 2^315102142 is an apocalyptic number.

315102142 is a deficient number, since it is larger than the sum of its proper divisors (157551074).

315102142 is a wasteful number, since it uses less digits than its factorization.

315102142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157551073.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 315102142 is about 17751.1166409328. The cubic root of 315102142 is about 680.4827468834.

Adding to 315102142 its reverse (241201513), we get a palindrome (556303655).

The spelling of 315102142 in words is "three hundred fifteen million, one hundred two thousand, one hundred forty-two".