1642572140 has 48 divisors (see below), whose sum is σ = 3926603520. Its totient is φ = 571327680.

The previous prime is 1642572133. The next prime is 1642572143. The reversal of 1642572140 is 412752461.

It is a junction number, because it is equal to n+sod(n) for n = 1642572097 and 1642572106.

It is not an unprimeable number, because it can be changed into a prime (1642572143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157250 + ... + 167369.

It is an arithmetic number, because the mean of its divisors is an integer number (81804240).

Almost surely, 2^1642572140 is an apocalyptic number.

1642572140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1642572140 is an abundant number, since it is smaller than the sum of its proper divisors (2284031380).

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

1642572140 is a wasteful number, since it uses less digits than its factorization.

1642572140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324662 (or 324660 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 1642572140 is about 40528.6582556097. The cubic root of 1642572140 is about 1179.8899016304.

The spelling of 1642572140 in words is "one billion, six hundred forty-two million, five hundred seventy-two thousand, one hundred forty".