672042251 has 2 divisors, whose sum is σ = 672042252. Its totient is φ = 672042250.

The previous prime is 672042233. The next prime is 672042253. The reversal of 672042251 is 152240276.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672042251 - 2¹⁸ = 671780107 is a prime.

Together with 672042253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672042253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336021125 + 336021126.

It is an arithmetic number, because the mean of its divisors is an integer number (336021126).

Almost surely, 2^672042251 is an apocalyptic number.

672042251 is a deficient number, since it is larger than the sum of its proper divisors (1).

672042251 is an equidigital number, since it uses as much as digits as its factorization.

672042251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 672042251 is about 25923.7777146773. Note that the first 4 decimals coincide. The cubic root of 672042251 is about 875.9221846428.

The spelling of 672042251 in words is "six hundred seventy-two million, forty-two thousand, two hundred fifty-one".