42150457 has 2 divisors, whose sum is σ = 42150458. Its totient is φ = 42150456.

The previous prime is 42150439. The next prime is 42150473. The reversal of 42150457 is 75405124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38675961 + 3474496 = 6219^2 + 1864^2 .

It is a cyclic number.

It is not a de Polignac number, because 42150457 - 2¹⁵ = 42117689 is a prime.

It is a super-2 number, since 2×42150457² = 3553322050617698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42150487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21075228 + 21075229.

It is an arithmetic number, because the mean of its divisors is an integer number (21075229).

Almost surely, 2^42150457 is an apocalyptic number.

It is an amenable number.

42150457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42150457 is an equidigital number, since it uses as much as digits as its factorization.

42150457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 42150457 is about 6492.3383306787. The cubic root of 42150457 is about 348.0172432774.

The spelling of 42150457 in words is "forty-two million, one hundred fifty thousand, four hundred fifty-seven".