742742600521 has 8 divisors (see below), whose sum is σ = 745532424000. Its totient is φ = 739952990160.

The previous prime is 742742600513. The next prime is 742742600563. The reversal of 742742600521 is 125006247247.

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 742742600521 - 2³ = 742742600513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742742600221) 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, 12125830 + ... + 12186928.

It is an arithmetic number, because the mean of its divisors is an integer number (93191553000).

Almost surely, 2^742742600521 is an apocalyptic number.

It is an amenable number.

742742600521 is a deficient number, since it is larger than the sum of its proper divisors (2789823479).

742742600521 is a wasteful number, since it uses less digits than its factorization.

742742600521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106559.

The product of its (nonzero) digits is 188160, while the sum is 40.

Adding to 742742600521 its reverse (125006247247), we get a palindrome (867748847768).

The spelling of 742742600521 in words is "seven hundred forty-two billion, seven hundred forty-two million, six hundred thousand, five hundred twenty-one".