1234420131251 has 2 divisors, whose sum is σ = 1234420131252. Its totient is φ = 1234420131250.

The previous prime is 1234420131233. The next prime is 1234420131319. The reversal of 1234420131251 is 1521310244321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1234420131251 - 2¹⁴ = 1234420114867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1234420131211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617210065625 + 617210065626.

It is an arithmetic number, because the mean of its divisors is an integer number (617210065626).

Almost surely, 2^{1234420131251} is an apocalyptic number.

1234420131251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234420131251 is an equidigital number, since it uses as much as digits as its factorization.

1234420131251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1234420131251 its reverse (1521310244321), we get a palindrome (2755730375572).

The spelling of 1234420131251 in words is "one trillion, two hundred thirty-four billion, four hundred twenty million, one hundred thirty-one thousand, two hundred fifty-one".