742021720770 has 64 divisors (see below), whose sum is σ = 1942899747840. Its totient is φ = 179869982400.

The previous prime is 742021720747. The next prime is 742021720787. The reversal of 742021720770 is 77027120247.

742021720770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4499065 + ... + 4661075.

It is an arithmetic number, because the mean of its divisors is an integer number (30357808560).

Almost surely, 2^742021720770 is an apocalyptic number.

742021720770 is an abundant number, since it is smaller than the sum of its proper divisors (1200878027070).

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

742021720770 is a wasteful number, since it uses less digits than its factorization.

742021720770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175911.

The product of its (nonzero) digits is 76832, while the sum is 39.

The spelling of 742021720770 in words is "seven hundred forty-two billion, twenty-one million, seven hundred twenty thousand, seven hundred seventy".