42453637 has 2 divisors, whose sum is σ = 42453638. Its totient is φ = 42453636.

The previous prime is 42453617. The next prime is 42453667. The reversal of 42453637 is 73635424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 60516 = 6511^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 42453637 - 2²³ = 34065029 is a prime.

It is a super-2 number, since 2×42453637² = 3604622589055538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42453617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21226818 + 21226819.

It is an arithmetic number, because the mean of its divisors is an integer number (21226819).

Almost surely, 2^42453637 is an apocalyptic number.

It is an amenable number.

42453637 is a deficient number, since it is larger than the sum of its proper divisors (1).

42453637 is an equidigital number, since it uses as much as digits as its factorization.

42453637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 34.

The square root of 42453637 is about 6515.6455551235. The cubic root of 42453637 is about 348.8496573322.

The spelling of 42453637 in words is "forty-two million, four hundred fifty-three thousand, six hundred thirty-seven".