126538918 has 16 divisors (see below), whose sum is σ = 207277056. Its totient is φ = 57458440.

The previous prime is 126538913. The next prime is 126538921. The reversal of 126538918 is 819835621.

It is a super-2 number, since 2×126538918² = 32024195537221448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126538913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24555 + ... + 29257.

It is an arithmetic number, because the mean of its divisors is an integer number (12954816).

Almost surely, 2^126538918 is an apocalyptic number.

126538918 is a deficient number, since it is larger than the sum of its proper divisors (80738138).

126538918 is a wasteful number, since it uses less digits than its factorization.

126538918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5939.

The product of its digits is 103680, while the sum is 43.

The square root of 126538918 is about 11248.9518622848. The cubic root of 126538918 is about 502.0435272808.

The spelling of 126538918 in words is "one hundred twenty-six million, five hundred thirty-eight thousand, nine hundred eighteen".