40942087 has 2 divisors, whose sum is σ = 40942088. Its totient is φ = 40942086.

The previous prime is 40942081. The next prime is 40942117. The reversal of 40942087 is 78024904.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40942087 - 2¹⁹ = 40417799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40942081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20471043 + 20471044.

It is an arithmetic number, because the mean of its divisors is an integer number (20471044).

Almost surely, 2^40942087 is an apocalyptic number.

40942087 is a deficient number, since it is larger than the sum of its proper divisors (1).

40942087 is an equidigital number, since it uses as much as digits as its factorization.

40942087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 40942087 is about 6398.6003938361. The cubic root of 40942087 is about 344.6592925720.

The spelling of 40942087 in words is "forty million, nine hundred forty-two thousand, eighty-seven".