3661406042 has 16 divisors (see below), whose sum is σ = 6645913920. Its totient is φ = 1476869568.

The previous prime is 3661406027. The next prime is 3661406057. The reversal of 3661406042 is 2406041663.

It is an interprime number because it is at equal distance from previous prime (3661406027) and next prime (3661406057).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7691792 + ... + 7692267.

It is an arithmetic number, because the mean of its divisors is an integer number (415369620).

Almost surely, 2^3661406042 is an apocalyptic number.

3661406042 is a deficient number, since it is larger than the sum of its proper divisors (2984507878).

3661406042 is a wasteful number, since it uses less digits than its factorization.

3661406042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15384085.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 3661406042 is about 60509.5533118532. The cubic root of 3661406042 is about 1541.2838624732.

The spelling of 3661406042 in words is "three billion, six hundred sixty-one million, four hundred six thousand, forty-two".