212400854 has 12 divisors (see below), whose sum is σ = 323613564. Its totient is φ = 104532252.

The previous prime is 212400823. The next prime is 212400889. The reversal of 212400854 is 458004212.

It is a happy number.

It is a super-2 number, since 2×212400854² = 90228245559858632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168077 + ... + 169335.

It is an arithmetic number, because the mean of its divisors is an integer number (26967797).

Almost surely, 2^212400854 is an apocalyptic number.

212400854 is a deficient number, since it is larger than the sum of its proper divisors (111212710).

212400854 is an frugal number, since it uses more digits than its factorization.

212400854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 212400854 is about 14573.9786606129. The cubic root of 212400854 is about 596.6487744011.

The spelling of 212400854 in words is "two hundred twelve million, four hundred thousand, eight hundred fifty-four".