30455142 has 16 divisors (see below), whose sum is σ = 61376832. Its totient is φ = 10073960.

The previous prime is 30455123. The next prime is 30455147. The reversal of 30455142 is 24155403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30455147) 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 7 ways as a sum of consecutive naturals, for example, 18588 + ... + 20159.

It is an arithmetic number, because the mean of its divisors is an integer number (3836052).

Almost surely, 2^30455142 is an apocalyptic number.

30455142 is an abundant number, since it is smaller than the sum of its proper divisors (30921690).

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

30455142 is a wasteful number, since it uses less digits than its factorization.

30455142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38883.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 30455142 is about 5518.6177617226. The cubic root of 30455142 is about 312.2867391899.

The spelling of 30455142 in words is "thirty million, four hundred fifty-five thousand, one hundred forty-two".