126319440 has 80 divisors (see below), whose sum is σ = 421723008. Its totient is φ = 31093248.

The previous prime is 126319439. The next prime is 126319481. The reversal of 126319440 is 44913621.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 126319398 and 126319407.

It is a congruent number.

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, 17124 + ... + 23363.

Almost surely, 2^126319440 is an apocalyptic number.

126319440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126319440 is an abundant number, since it is smaller than the sum of its proper divisors (295403568).

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

126319440 is a wasteful number, since it uses less digits than its factorization.

126319440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40516 (or 40510 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 126319440 is about 11239.1921417867. The cubic root of 126319440 is about 501.7530994342.

The spelling of 126319440 in words is "one hundred twenty-six million, three hundred nineteen thousand, four hundred forty".