42351457 has 2 divisors, whose sum is σ = 42351458. Its totient is φ = 42351456.

The previous prime is 42351427. The next prime is 42351473. The reversal of 42351457 is 75415324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41267776 + 1083681 = 6424^2 + 1041^2 .

It is a cyclic number.

It is not a de Polignac number, because 42351457 - 2¹¹ = 42349409 is a prime.

It is a Chen prime.

It is equal to p_2567722 and since 42351457 and 2567722 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42351427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21175728 + 21175729.

It is an arithmetic number, because the mean of its divisors is an integer number (21175729).

Almost surely, 2^42351457 is an apocalyptic number.

It is an amenable number.

42351457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42351457 is an equidigital number, since it uses as much as digits as its factorization.

42351457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 42351457 is about 6507.7997049694. The cubic root of 42351457 is about 348.5695549531.

The spelling of 42351457 in words is "forty-two million, three hundred fifty-one thousand, four hundred fifty-seven".