126942387 has 16 divisors (see below), whose sum is σ = 198847488. Its totient is φ = 71016480.

The previous prime is 126942379. The next prime is 126942433. The reversal of 126942387 is 783249621.

It is not a de Polignac number, because 126942387 - 2³ = 126942379 is a prime.

It is a super-2 number, since 2×126942387² = 32228739234515538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126942307) 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, 147523 + ... + 148380.

It is an arithmetic number, because the mean of its divisors is an integer number (12427968).

Almost surely, 2^126942387 is an apocalyptic number.

126942387 is a deficient number, since it is larger than the sum of its proper divisors (71905101).

126942387 is a wasteful number, since it uses less digits than its factorization.

126942387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295930.

The product of its digits is 145152, while the sum is 42.

The square root of 126942387 is about 11266.8712160919. The cubic root of 126942387 is about 502.5765493143.

The spelling of 126942387 in words is "one hundred twenty-six million, nine hundred forty-two thousand, three hundred eighty-seven".