42402687 has 16 divisors (see below), whose sum is σ = 58122240. Its totient is φ = 27482112.

The previous prime is 42402653. The next prime is 42402719. The reversal of 42402687 is 78620424.

It is not a de Polignac number, because 42402687 - 2⁷ = 42402559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32514 + ... + 33792.

It is an arithmetic number, because the mean of its divisors is an integer number (3632640).

Almost surely, 2^42402687 is an apocalyptic number.

42402687 is a deficient number, since it is larger than the sum of its proper divisors (15719553).

42402687 is a wasteful number, since it uses less digits than its factorization.

42402687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 42402687 is about 6511.7345615435. The cubic root of 42402687 is about 348.7100461674.

The spelling of 42402687 in words is "forty-two million, four hundred two thousand, six hundred eighty-seven".