30251420142 has 16 divisors (see below), whose sum is σ = 60738262992. Its totient is φ = 10044569600.

The previous prime is 30251420141. The next prime is 30251420149. The reversal of 30251420142 is 24102415203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30251420141) 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, 9807609 + ... + 9810692.

It is an arithmetic number, because the mean of its divisors is an integer number (3796141437).

Almost surely, 2^30251420142 is an apocalyptic number.

30251420142 is an abundant number, since it is smaller than the sum of its proper divisors (30486842850).

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

30251420142 is a wasteful number, since it uses less digits than its factorization.

30251420142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19618563.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 30251420142 its reverse (24102415203), we get a palindrome (54353835345).

The spelling of 30251420142 in words is "thirty billion, two hundred fifty-one million, four hundred twenty thousand, one hundred forty-two".