124427440 has 20 divisors (see below), whose sum is σ = 289293984. Its totient is φ = 49770944.

The previous prime is 124427419. The next prime is 124427461. The reversal of 124427440 is 44724421.

It is an interprime number because it is at equal distance from previous prime (124427419) and next prime (124427461).

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 124427399 and 124427408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777592 + ... + 777751.

Almost surely, 2^124427440 is an apocalyptic number.

124427440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124427440 is an abundant number, since it is smaller than the sum of its proper divisors (164866544).

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

124427440 is a wasteful number, since it uses less digits than its factorization.

124427440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555356 (or 1555350 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 124427440 is about 11154.7048369735. The cubic root of 124427440 is about 499.2354180916.

The spelling of 124427440 in words is "one hundred twenty-four million, four hundred twenty-seven thousand, four hundred forty".