1251020467 has 2 divisors, whose sum is σ = 1251020468. Its totient is φ = 1251020466.

The previous prime is 1251020453. The next prime is 1251020509. The reversal of 1251020467 is 7640201521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251020467 - 2¹⁹ = 1250496179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251020417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625510233 + 625510234.

It is an arithmetic number, because the mean of its divisors is an integer number (625510234).

Almost surely, 2^1251020467 is an apocalyptic number.

1251020467 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251020467 is an equidigital number, since it uses as much as digits as its factorization.

1251020467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1251020467 is about 35369.7676978518. The cubic root of 1251020467 is about 1077.5104025496.

Adding to 1251020467 its reverse (7640201521), we get a palindrome (8891221988).

The spelling of 1251020467 in words is "one billion, two hundred fifty-one million, twenty thousand, four hundred sixty-seven".