1642746042 has 64 divisors (see below), whose sum is σ = 4391654400. Its totient is φ = 444651120.

The previous prime is 1642746041. The next prime is 1642746097. The reversal of 1642746042 is 2406472461.

1642746042 is a `hidden beast` number, since 1 + 6 + 42 + 7 + 4 + 604 + 2 = 666.

It is a super-2 number, since 2×1642746042² = 5397229117013331528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1642745988 and 1642746006.

It is not an unprimeable number, because it can be changed into a prime (1642746041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107184 + ... + 121547.

It is an arithmetic number, because the mean of its divisors is an integer number (68619600).

Almost surely, 2^1642746042 is an apocalyptic number.

1642746042 is an abundant number, since it is smaller than the sum of its proper divisors (2748908358).

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

1642746042 is a wasteful number, since it uses less digits than its factorization.

1642746042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228768 (or 228762 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 1642746042 is about 40530.8036189760. The cubic root of 1642746042 is about 1179.9315391671.

The spelling of 1642746042 in words is "one billion, six hundred forty-two million, seven hundred forty-six thousand, forty-two".