230742621 has 8 divisors (see below), whose sum is σ = 341840960. Its totient is φ = 153828396.

The previous prime is 230742613. The next prime is 230742623. The reversal of 230742621 is 126247032.

230742621 is a `hidden beast` number, since 2 + 30 + 7 + 4 + 2 + 621 = 666.

It is not a de Polignac number, because 230742621 - 2³ = 230742613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8546023 = 230742621 / (2 + 3 + 0 + 7 + 4 + 2 + 6 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230742623) 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, 4272985 + ... + 4273038.

It is an arithmetic number, because the mean of its divisors is an integer number (42730120).

Almost surely, 2^230742621 is an apocalyptic number.

It is an amenable number.

230742621 is a deficient number, since it is larger than the sum of its proper divisors (111098339).

230742621 is an equidigital number, since it uses as much as digits as its factorization.

230742621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546032 (or 8546026 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 230742621 is about 15190.2146462780. The cubic root of 230742621 is about 613.3512770100.

Adding to 230742621 its reverse (126247032), we get a palindrome (356989653).

The spelling of 230742621 in words is "two hundred thirty million, seven hundred forty-two thousand, six hundred twenty-one".