390042117812 has 24 divisors (see below), whose sum is σ = 684544180320. Its totient is φ = 194458742240.

The previous prime is 390042117811. The next prime is 390042117853. The reversal of 390042117812 is 218711240093.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390042117811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2247614 + ... + 2414922.

It is an arithmetic number, because the mean of its divisors is an integer number (28522674180).

Almost surely, 2^390042117812 is an apocalyptic number.

It is an amenable number.

390042117812 is a deficient number, since it is larger than the sum of its proper divisors (294502062508).

390042117812 is a wasteful number, since it uses less digits than its factorization.

390042117812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168991 (or 168989 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 390042117812 in words is "three hundred ninety billion, forty-two million, one hundred seventeen thousand, eight hundred twelve".