126478840 has 32 divisors (see below), whose sum is σ = 296952480. Its totient is φ = 48391552.

The previous prime is 126478837. The next prime is 126478873. The reversal of 126478840 is 48874621.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 126478793 and 126478802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67819 + ... + 69658.

It is an arithmetic number, because the mean of its divisors is an integer number (9279765).

Almost surely, 2^126478840 is an apocalyptic number.

126478840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126478840 is an abundant number, since it is smaller than the sum of its proper divisors (170473640).

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

126478840 is a wasteful number, since it uses less digits than its factorization.

126478840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137511 (or 137507 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 126478840 is about 11246.2811631223. The cubic root of 126478840 is about 501.9640614897.

The spelling of 126478840 in words is "one hundred twenty-six million, four hundred seventy-eight thousand, eight hundred forty".