400212054 has 48 divisors (see below), whose sum is σ = 971539920. Its totient is φ = 117996480.

The previous prime is 400212037. The next prime is 400212073. The reversal of 400212054 is 450212004.

400212054 is a `hidden beast` number, since 400 + 212 + 0 + 54 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19989 + ... + 34640.

It is an arithmetic number, because the mean of its divisors is an integer number (20240415).

Almost surely, 2^400212054 is an apocalyptic number.

400212054 is an abundant number, since it is smaller than the sum of its proper divisors (571327866).

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

400212054 is a wasteful number, since it uses less digits than its factorization.

400212054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54685 (or 54682 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 400212054 is about 20005.3006475784. The cubic root of 400212054 is about 736.9364789958.

Adding to 400212054 its reverse (450212004), we get a palindrome (850424058).

The spelling of 400212054 in words is "four hundred million, two hundred twelve thousand, fifty-four".