151142431421 has 2 divisors, whose sum is σ = 151142431422. Its totient is φ = 151142431420.

The previous prime is 151142431381. The next prime is 151142431439. The reversal of 151142431421 is 124134241151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138280603321 + 12861828100 = 371861^2 + 113410^2 .

It is a cyclic number.

It is not a de Polignac number, because 151142431421 - 2³⁰ = 150068689597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151142431721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75571215710 + 75571215711.

It is an arithmetic number, because the mean of its divisors is an integer number (75571215711).

Almost surely, 2^151142431421 is an apocalyptic number.

It is an amenable number.

151142431421 is a deficient number, since it is larger than the sum of its proper divisors (1).

151142431421 is an equidigital number, since it uses as much as digits as its factorization.

151142431421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 29.

Adding to 151142431421 its reverse (124134241151), we get a palindrome (275276672572).

The spelling of 151142431421 in words is "one hundred fifty-one billion, one hundred forty-two million, four hundred thirty-one thousand, four hundred twenty-one".