212056739 has 8 divisors (see below), whose sum is σ = 223392000. Its totient is φ = 200738952.

The previous prime is 212056727. The next prime is 212056753. The reversal of 212056739 is 937650212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212056739 - 2⁴ = 212056723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212056699 and 212056708.

It is not an unprimeable number, because it can be changed into a prime (212056639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26042 + ... + 33200.

It is an arithmetic number, because the mean of its divisors is an integer number (27924000).

Almost surely, 2^212056739 is an apocalyptic number.

212056739 is a deficient number, since it is larger than the sum of its proper divisors (11335261).

212056739 is a wasteful number, since it uses less digits than its factorization.

212056739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 212056739 is about 14562.1680734704. The cubic root of 212056739 is about 596.3263859113.

The spelling of 212056739 in words is "two hundred twelve million, fifty-six thousand, seven hundred thirty-nine".