126278540 has 48 divisors (see below), whose sum is σ = 272795040. Its totient is φ = 49082880.

The previous prime is 126278527. The next prime is 126278563. The reversal of 126278540 is 45872621.

It is a self number, because there is not a number n which added to its sum of digits gives 126278540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107999 + ... + 109161.

It is an arithmetic number, because the mean of its divisors is an integer number (5683230).

Almost surely, 2^126278540 is an apocalyptic number.

126278540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126278540 is an abundant number, since it is smaller than the sum of its proper divisors (146516500).

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

126278540 is a wasteful number, since it uses less digits than its factorization.

126278540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 126278540 is about 11237.3724686868. The cubic root of 126278540 is about 501.6989406628.

The spelling of 126278540 in words is "one hundred twenty-six million, two hundred seventy-eight thousand, five hundred forty".