42087699 has 12 divisors (see below), whose sum is σ = 64369656. Its totient is φ = 26407872.

The previous prime is 42087697. The next prime is 42087707. The reversal of 42087699 is 99678024.

It is a happy number.

It is not a de Polignac number, because 42087699 - 2¹ = 42087697 is a prime.

It is a super-2 number, since 2×42087699² = 3542748814229202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42087697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137389 + ... + 137694.

It is an arithmetic number, because the mean of its divisors is an integer number (5364138).

Almost surely, 2^42087699 is an apocalyptic number.

42087699 is a deficient number, since it is larger than the sum of its proper divisors (22281957).

42087699 is a wasteful number, since it uses less digits than its factorization.

42087699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275106 (or 275103 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 42087699 is about 6487.5032947969. The cubic root of 42087699 is about 347.8444360186.

The spelling of 42087699 in words is "forty-two million, eighty-seven thousand, six hundred ninety-nine".