400042195850 has 144 divisors (see below), whose sum is σ = 860188944384. Its totient is φ = 138043382400.

The previous prime is 400042195849. The next prime is 400042195867. The reversal of 400042195850 is 58591240004.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 17660732 + ... + 17683368.

It is an arithmetic number, because the mean of its divisors is an integer number (5973534336).

Almost surely, 2^400042195850 is an apocalyptic number.

400042195850 is an abundant number, since it is smaller than the sum of its proper divisors (460146748534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400042195850 is a wasteful number, since it uses less digits than its factorization.

400042195850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22821 (or 22805 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 400042195850 in words is "four hundred billion, forty-two million, one hundred ninety-five thousand, eight hundred fifty".