30251142312420 has 24 divisors (see below), whose sum is σ = 84703198474944. Its totient is φ = 8066971283296.

The previous prime is 30251142312379. The next prime is 30251142312421. The reversal of 30251142312420 is 2421324115203.

It is a happy number.

It is a super-2 number, since 2×30251142312420² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (30251142312421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252092852544 + ... + 252092852663.

It is an arithmetic number, because the mean of its divisors is an integer number (3529299936456).

Almost surely, 2^{30251142312420} is an apocalyptic number.

30251142312420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30251142312420 is an abundant number, since it is smaller than the sum of its proper divisors (54452056162524).

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

30251142312420 is a wasteful number, since it uses less digits than its factorization.

30251142312420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504185705219 (or 504185705217 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 30251142312420 its reverse (2421324115203), we get a palindrome (32672466427623).

The spelling of 30251142312420 in words is "thirty trillion, two hundred fifty-one billion, one hundred forty-two million, three hundred twelve thousand, four hundred twenty".