42292387 has 2 divisors, whose sum is σ = 42292388. Its totient is φ = 42292386.

The previous prime is 42292373. The next prime is 42292403. The reversal of 42292387 is 78329224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42292387 - 2¹⁵ = 42259619 is a prime.

It is not a weakly prime, because it can be changed into another prime (42292307) 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, 21146193 + 21146194.

It is an arithmetic number, because the mean of its divisors is an integer number (21146194).

Almost surely, 2^42292387 is an apocalyptic number.

42292387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42292387 is an equidigital number, since it uses as much as digits as its factorization.

42292387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 42292387 is about 6503.2597210937. The cubic root of 42292387 is about 348.4074229181.

The spelling of 42292387 in words is "forty-two million, two hundred ninety-two thousand, three hundred eighty-seven".