34720542 has 16 divisors (see below), whose sum is σ = 77156880. Its totient is φ = 11573496.

The previous prime is 34720531. The next prime is 34720549. The reversal of 34720542 is 24502743.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34720549) 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, 321433 + ... + 321540.

It is an arithmetic number, because the mean of its divisors is an integer number (4822305).

Almost surely, 2^34720542 is an apocalyptic number.

34720542 is an abundant number, since it is smaller than the sum of its proper divisors (42436338).

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

34720542 is a wasteful number, since it uses less digits than its factorization.

34720542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642984 (or 642978 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 34720542 is about 5892.4139365798. The cubic root of 34720542 is about 326.2337077344.

The spelling of 34720542 in words is "thirty-four million, seven hundred twenty thousand, five hundred forty-two".