742430881 has 4 divisors (see below), whose sum is σ = 742533012. Its totient is φ = 742328752.

The previous prime is 742430813. The next prime is 742430903. The reversal of 742430881 is 188034247.

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 511664400 + 230766481 = 22620^2 + 15191^2 .

It is a cyclic number.

It is not a de Polignac number, because 742430881 - 2⁹ = 742430369 is a prime.

It is a super-2 number, since 2×742430881² = 1102407226124872322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742430881.

It is not an unprimeable number, because it can be changed into a prime (742430581) 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, 39250 + ... + 55003.

It is an arithmetic number, because the mean of its divisors is an integer number (185633253).

Almost surely, 2^742430881 is an apocalyptic number.

It is an amenable number.

742430881 is a deficient number, since it is larger than the sum of its proper divisors (102131).

742430881 is an equidigital number, since it uses as much as digits as its factorization.

742430881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102130.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 742430881 is about 27247.5848654518. The cubic root of 742430881 is about 905.4935114443.

The spelling of 742430881 in words is "seven hundred forty-two million, four hundred thirty thousand, eight hundred eighty-one".