70720542 has 24 divisors (see below), whose sum is σ = 157370616. Its totient is φ = 22936176.

The previous prime is 70720519. The next prime is 70720543. The reversal of 70720542 is 24502707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70720543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52428 + ... + 53759.

It is an arithmetic number, because the mean of its divisors is an integer number (6557109).

Almost surely, 2^70720542 is an apocalyptic number.

70720542 is an abundant number, since it is smaller than the sum of its proper divisors (86650074).

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

70720542 is a wasteful number, since it uses less digits than its factorization.

70720542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106232 (or 106229 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 70720542 is about 8409.5506419784. The cubic root of 70720542 is about 413.5377814153.

The spelling of 70720542 in words is "seventy million, seven hundred twenty thousand, five hundred forty-two".