126915287 has 4 divisors (see below), whose sum is σ = 128171976. Its totient is φ = 125658600.

The previous prime is 126915259. The next prime is 126915301. The reversal of 126915287 is 782519621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126915287 - 2⁸ = 126915031 is a prime.

It is a super-2 number, since 2×126915287² = 32214980148584738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126914287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628193 + ... + 628394.

It is an arithmetic number, because the mean of its divisors is an integer number (32042994).

Almost surely, 2^126915287 is an apocalyptic number.

126915287 is a deficient number, since it is larger than the sum of its proper divisors (1256689).

126915287 is a wasteful number, since it uses less digits than its factorization.

126915287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256688.

The product of its digits is 60480, while the sum is 41.

The square root of 126915287 is about 11265.6685110117. The cubic root of 126915287 is about 502.5407829741.

The spelling of 126915287 in words is "one hundred twenty-six million, nine hundred fifteen thousand, two hundred eighty-seven".