42303987 has 24 divisors (see below), whose sum is σ = 68468400. Its totient is φ = 24943680.

The previous prime is 42303983. The next prime is 42303991. The reversal of 42303987 is 78930324.

It is an interprime number because it is at equal distance from previous prime (42303983) and next prime (42303991).

It is not a de Polignac number, because 42303987 - 2² = 42303983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42303983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2112 + ... + 9437.

It is an arithmetic number, because the mean of its divisors is an integer number (2852850).

Almost surely, 2^42303987 is an apocalyptic number.

42303987 is a deficient number, since it is larger than the sum of its proper divisors (26164413).

42303987 is a wasteful number, since it uses less digits than its factorization.

42303987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11603 (or 11600 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 42303987 is about 6504.1515203753. The cubic root of 42303987 is about 348.4392738567.

The spelling of 42303987 in words is "forty-two million, three hundred three thousand, nine hundred eighty-seven".