30142995 has 32 divisors (see below), whose sum is σ = 51577344. Its totient is φ = 14995200.

The previous prime is 30142993. The next prime is 30143011. The reversal of 30142995 is 59924103.

It is not a de Polignac number, because 30142995 - 2¹ = 30142993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30142993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13080 + ... + 15210.

It is an arithmetic number, because the mean of its divisors is an integer number (1611792).

Almost surely, 2^30142995 is an apocalyptic number.

30142995 is a deficient number, since it is larger than the sum of its proper divisors (21434349).

30142995 is a wasteful number, since it uses less digits than its factorization.

30142995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 30142995 is about 5490.2636548712. The cubic root of 30142995 is about 311.2161557368.

The spelling of 30142995 in words is "thirty million, one hundred forty-two thousand, nine hundred ninety-five".