30057742 has 16 divisors (see below), whose sum is σ = 52969392. Its totient is φ = 12611520.

The previous prime is 30057739. The next prime is 30057743. The reversal of 30057742 is 24775003.

It is a self number, because there is not a number n which added to its sum of digits gives 30057742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30057743) 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, 52263 + ... + 52834.

It is an arithmetic number, because the mean of its divisors is an integer number (3310587).

Almost surely, 2^30057742 is an apocalyptic number.

30057742 is a deficient number, since it is larger than the sum of its proper divisors (22911650).

30057742 is a wasteful number, since it uses less digits than its factorization.

30057742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105123.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 30057742 is about 5482.4941404437. The cubic root of 30057742 is about 310.9224759641.

The spelling of 30057742 in words is "thirty million, fifty-seven thousand, seven hundred forty-two".