1235141251 has 2 divisors, whose sum is σ = 1235141252. Its totient is φ = 1235141250.

The previous prime is 1235141209. The next prime is 1235141269. The reversal of 1235141251 is 1521415321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235141251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1235141651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617570625 + 617570626.

It is an arithmetic number, because the mean of its divisors is an integer number (617570626).

Almost surely, 2^1235141251 is an apocalyptic number.

1235141251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235141251 is an equidigital number, since it uses as much as digits as its factorization.

1235141251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 1235141251 is about 35144.5764094547. The cubic root of 1235141251 is about 1072.9320261272.

Adding to 1235141251 its reverse (1521415321), we get a palindrome (2756556572).

The spelling of 1235141251 in words is "one billion, two hundred thirty-five million, one hundred forty-one thousand, two hundred fifty-one".