42862649 has 2 divisors, whose sum is σ = 42862650. Its totient is φ = 42862648.

The previous prime is 42862619. The next prime is 42862657. The reversal of 42862649 is 94626824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 937024 = 6475^2 + 968^2 .

It is a cyclic number.

It is not a de Polignac number, because 42862649 - 2¹² = 42858553 is a prime.

It is not a weakly prime, because it can be changed into another prime (42862619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21431324 + 21431325.

It is an arithmetic number, because the mean of its divisors is an integer number (21431325).

Almost surely, 2^42862649 is an apocalyptic number.

It is an amenable number.

42862649 is a deficient number, since it is larger than the sum of its proper divisors (1).

42862649 is an equidigital number, since it uses as much as digits as its factorization.

42862649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 42862649 is about 6546.9572321805. The cubic root of 42862649 is about 349.9663886091.

The spelling of 42862649 in words is "forty-two million, eight hundred sixty-two thousand, six hundred forty-nine".