1242125315 has 16 divisors (see below), whose sum is σ = 1581703200. Its totient is φ = 933189120.

The previous prime is 1242125309. The next prime is 1242125317. The reversal of 1242125315 is 5135212421.

It is not a de Polignac number, because 1242125315 - 2¹⁶ = 1242059779 is a prime.

It is a super-3 number, since 3×1242125315³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242125317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23336 + ... + 55034.

It is an arithmetic number, because the mean of its divisors is an integer number (98856450).

Almost surely, 2^1242125315 is an apocalyptic number.

1242125315 is a deficient number, since it is larger than the sum of its proper divisors (339577885).

1242125315 is a wasteful number, since it uses less digits than its factorization.

1242125315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32182.

The product of its digits is 2400, while the sum is 26.

The square root of 1242125315 is about 35243.7982487700. The cubic root of 1242125315 is about 1074.9505122342.

Adding to 1242125315 its reverse (5135212421), we get a palindrome (6377337736).

The spelling of 1242125315 in words is "one billion, two hundred forty-two million, one hundred twenty-five thousand, three hundred fifteen".