42252649 has 2 divisors, whose sum is σ = 42252650. Its totient is φ = 42252648.

The previous prime is 42252629. The next prime is 42252653. The reversal of 42252649 is 94625224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22610025 + 19642624 = 4755^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 42252649 - 2⁹ = 42252137 is a prime.

It is not a weakly prime, because it can be changed into another prime (42252629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21126324 + 21126325.

It is an arithmetic number, because the mean of its divisors is an integer number (21126325).

Almost surely, 2^42252649 is an apocalyptic number.

It is an amenable number.

42252649 is a deficient number, since it is larger than the sum of its proper divisors (1).

42252649 is an equidigital number, since it uses as much as digits as its factorization.

42252649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The square root of 42252649 is about 6500.2037660369. The cubic root of 42252649 is about 348.2982673176.

The spelling of 42252649 in words is "forty-two million, two hundred fifty-two thousand, six hundred forty-nine".