4090000642 has 64 divisors (see below), whose sum is σ = 7749181440. Its totient is φ = 1575733824.

The previous prime is 4090000639. The next prime is 4090000679. The reversal of 4090000642 is 2460000904.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3935959 + ... + 3936997.

It is an arithmetic number, because the mean of its divisors is an integer number (121080960).

Almost surely, 2^4090000642 is an apocalyptic number.

4090000642 is a deficient number, since it is larger than the sum of its proper divisors (3659180798).

4090000642 is a wasteful number, since it uses less digits than its factorization.

4090000642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4090000642 is about 63953.1128405803. The cubic root of 4090000642 is about 1599.2184518950.

It can be divided in two parts, 409000064 and 2, that multiplied together give a triangular number (818000128 = T₄₀₄₄₇).

The spelling of 4090000642 in words is "four billion, ninety million, six hundred forty-two", and thus it is an aban number.