246942721 has 4 divisors (see below), whose sum is σ = 250325572. Its totient is φ = 243559872.

The previous prime is 246942691. The next prime is 246942763. The reversal of 246942721 is 127249642.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206238321 + 40704400 = 14361^2 + 6380^2 .

It is a cyclic number.

It is not a de Polignac number, because 246942721 - 2¹⁹ = 246418433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (246942781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691316 + ... + 1691461.

It is an arithmetic number, because the mean of its divisors is an integer number (62581393).

Almost surely, 2^246942721 is an apocalyptic number.

It is an amenable number.

246942721 is a deficient number, since it is larger than the sum of its proper divisors (3382851).

246942721 is an equidigital number, since it uses as much as digits as its factorization.

246942721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382850.

The product of its digits is 48384, while the sum is 37.

The square root of 246942721 is about 15714.4112520960. The cubic root of 246942721 is about 627.3820318652.

The spelling of 246942721 in words is "two hundred forty-six million, nine hundred forty-two thousand, seven hundred twenty-one".