402054212 has 72 divisors (see below), whose sum is σ = 870458400. Its totient is φ = 161554176.

The previous prime is 402054209. The next prime is 402054251. The reversal of 402054212 is 212450204.

It is a happy number.

It is a super-4 number, since 4×402054212⁴ (a number of 36 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397964 + ... + 398972.

It is an arithmetic number, because the mean of its divisors is an integer number (12089700).

Almost surely, 2^402054212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402054212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435229200).

402054212 is an abundant number, since it is smaller than the sum of its proper divisors (468404188).

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

402054212 is a wasteful number, since it uses less digits than its factorization.

402054212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153 (or 1144 counting only the distinct ones).

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

The square root of 402054212 is about 20051.2895345910. The cubic root of 402054212 is about 738.0654436766.

The spelling of 402054212 in words is "four hundred two million, fifty-four thousand, two hundred twelve".