576742421 has 8 divisors (see below), whose sum is σ = 598198584. Its totient is φ = 555595200.

The previous prime is 576742417. The next prime is 576742429. The reversal of 576742421 is 124247675.

It can be written as a sum of positive squares in 4 ways, for example, as 423948100 + 152794321 = 20590^2 + 12361^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 576742421 - 2² = 576742417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (576742429) 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, 73430 + ... + 80903.

It is an arithmetic number, because the mean of its divisors is an integer number (74774823).

Almost surely, 2^576742421 is an apocalyptic number.

It is an amenable number.

576742421 is a deficient number, since it is larger than the sum of its proper divisors (21456163).

576742421 is a wasteful number, since it uses less digits than its factorization.

576742421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154471.

The product of its digits is 94080, while the sum is 38.

The square root of 576742421 is about 24015.4621233904. The cubic root of 576742421 is about 832.3908521124.

The spelling of 576742421 in words is "five hundred seventy-six million, seven hundred forty-two thousand, four hundred twenty-one".