40742887 has 4 divisors (see below), whose sum is σ = 41690440. Its totient is φ = 39795336.

The previous prime is 40742869. The next prime is 40742893. The reversal of 40742887 is 78824704.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40742887 - 2⁷ = 40742759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40742827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473712 + ... + 473797.

It is an arithmetic number, because the mean of its divisors is an integer number (10422610).

Almost surely, 2^40742887 is an apocalyptic number.

40742887 is a deficient number, since it is larger than the sum of its proper divisors (947553).

40742887 is an equidigital number, since it uses as much as digits as its factorization.

40742887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947552.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 40742887 is about 6383.0155099295. The cubic root of 40742887 is about 344.0994140966.

The spelling of 40742887 in words is "forty million, seven hundred forty-two thousand, eight hundred eighty-seven".