163400042 has 16 divisors (see below), whose sum is σ = 264184872. Its totient is φ = 75349440.

The previous prime is 163400011. The next prime is 163400051. The reversal of 163400042 is 240004361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 115111441 + 48288601 = 10729^2 + 6949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163399987 and 163400023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40208 + ... + 44084.

Almost surely, 2^163400042 is an apocalyptic number.

163400042 is a deficient number, since it is larger than the sum of its proper divisors (100784830).

163400042 is a wasteful number, since it uses less digits than its factorization.

163400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 163400042 is about 12782.8025878522. The cubic root of 163400042 is about 546.7020737692.

The spelling of 163400042 in words is "one hundred sixty-three million, four hundred thousand, forty-two".