126290540 has 24 divisors (see below), whose sum is σ = 268948512. Its totient is φ = 49804160.

The previous prime is 126290531. The next prime is 126290543. The reversal of 126290540 is 45092621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (126290543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43049 + ... + 45888.

It is an arithmetic number, because the mean of its divisors is an integer number (11206188).

Almost surely, 2^126290540 is an apocalyptic number.

126290540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126290540 is an abundant number, since it is smaller than the sum of its proper divisors (142657972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126290540 is a wasteful number, since it uses less digits than its factorization.

126290540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89017 (or 89015 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 126290540 is about 11237.9063886473. The cubic root of 126290540 is about 501.7148319789.

The spelling of 126290540 in words is "one hundred twenty-six million, two hundred ninety thousand, five hundred forty".