742072306428 has 36 divisors (see below), whose sum is σ = 1875984241768. Its totient is φ = 247332333600.

The previous prime is 742072306403. The next prime is 742072306433. The reversal of 742072306428 is 824603270247.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 684526 + ... + 1397397.

Almost surely, 2^742072306428 is an apocalyptic number.

It is an amenable number.

742072306428 is an abundant number, since it is smaller than the sum of its proper divisors (1133911935340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742072306428 is a wasteful number, since it uses less digits than its factorization.

742072306428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091834 (or 2091829 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 742072306428 in words is "seven hundred forty-two billion, seventy-two million, three hundred six thousand, four hundred twenty-eight".