390084742 has 16 divisors (see below), whose sum is σ = 620071200. Its totient is φ = 183722560.

The previous prime is 390084697. The next prime is 390084743. The reversal of 390084742 is 247480093.

It is a happy number.

It is a super-2 number, since 2×390084742² = 304332211882413128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390084743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79642 + ... + 84397.

It is an arithmetic number, because the mean of its divisors is an integer number (38754450).

Almost surely, 2^390084742 is an apocalyptic number.

390084742 is a deficient number, since it is larger than the sum of its proper divisors (229986458).

390084742 is a wasteful number, since it uses less digits than its factorization.

390084742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164111.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 390084742 is about 19750.5630805808. The cubic root of 390084742 is about 730.6672712850.

The spelling of 390084742 in words is "three hundred ninety million, eighty-four thousand, seven hundred forty-two".