30142240023 has 32 divisors (see below), whose sum is σ = 47535091200. Its totient is φ = 16623121536.

The previous prime is 30142240019. The next prime is 30142240033. The reversal of 30142240023 is 32004224103.

It is not a de Polignac number, because 30142240023 - 2² = 30142240019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142240033) 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, 1630848 + ... + 1649226.

It is an arithmetic number, because the mean of its divisors is an integer number (1485471600).

Almost surely, 2^30142240023 is an apocalyptic number.

30142240023 is a deficient number, since it is larger than the sum of its proper divisors (17392851177).

30142240023 is a wasteful number, since it uses less digits than its factorization.

30142240023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21111.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 30142240023 its reverse (32004224103), we get a palindrome (62146464126).

The spelling of 30142240023 in words is "thirty billion, one hundred forty-two million, two hundred forty thousand, twenty-three".