400450124 has 6 divisors (see below), whose sum is σ = 700787724. Its totient is φ = 200225060.

The previous prime is 400450121. The next prime is 400450129. The reversal of 400450124 is 421054004.

It is a junction number, because it is equal to n+sod(n) for n = 400450096 and 400450105.

It is not an unprimeable number, because it can be changed into a prime (400450121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50056262 + ... + 50056269.

It is an arithmetic number, because the mean of its divisors is an integer number (116797954).

Almost surely, 2^400450124 is an apocalyptic number.

It is an amenable number.

400450124 is a deficient number, since it is larger than the sum of its proper divisors (300337600).

400450124 is a wasteful number, since it uses less digits than its factorization.

400450124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100112535 (or 100112533 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 400450124 is about 20011.2499359735. The cubic root of 400450124 is about 737.0825746214.

The spelling of 400450124 in words is "four hundred million, four hundred fifty thousand, one hundred twenty-four".