1642102940 has 24 divisors (see below), whose sum is σ = 3598348320. Its totient is φ = 628282688.

The previous prime is 1642102937. The next prime is 1642102951. The reversal of 1642102940 is 492012461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784435 + ... + 1785354.

It is an arithmetic number, because the mean of its divisors is an integer number (149931180).

Almost surely, 2^1642102940 is an apocalyptic number.

1642102940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1642102940 is an abundant number, since it is smaller than the sum of its proper divisors (1956245380).

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

1642102940 is a wasteful number, since it uses less digits than its factorization.

1642102940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3569821 (or 3569819 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1642102940 is about 40522.8693455930. The cubic root of 1642102940 is about 1179.7775459234. Note that the first 3 decimals are identical.

The spelling of 1642102940 in words is "one billion, six hundred forty-two million, one hundred two thousand, nine hundred forty".