42200251 has 2 divisors, whose sum is σ = 42200252. Its totient is φ = 42200250.

The previous prime is 42200237. The next prime is 42200287. The reversal of 42200251 is 15200224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42200251 - 2²³ = 33811643 is a prime.

It is a super-2 number, since 2×42200251² = 3561722368926002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42200201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21100125 + 21100126.

It is an arithmetic number, because the mean of its divisors is an integer number (21100126).

Almost surely, 2^42200251 is an apocalyptic number.

42200251 is a deficient number, since it is larger than the sum of its proper divisors (1).

42200251 is an equidigital number, since it uses as much as digits as its factorization.

42200251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42200251 is about 6496.1720266631. The cubic root of 42200251 is about 348.1542315209.

Adding to 42200251 its reverse (15200224), we get a palindrome (57400475).

The spelling of 42200251 in words is "forty-two million, two hundred thousand, two hundred fifty-one".