1620142142 has 16 divisors (see below), whose sum is σ = 2526651792. Its totient is φ = 778514880.

The previous prime is 1620142129. The next prime is 1620142151. The reversal of 1620142142 is 2412410261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141953 + ... + 152940.

It is an arithmetic number, because the mean of its divisors is an integer number (157915737).

Almost surely, 2^1620142142 is an apocalyptic number.

1620142142 is a deficient number, since it is larger than the sum of its proper divisors (906509650).

1620142142 is a wasteful number, since it uses less digits than its factorization.

1620142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295003.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1620142142 is about 40250.9893294562. The cubic root of 1620142142 is about 1174.4946411681.

The spelling of 1620142142 in words is "one billion, six hundred twenty million, one hundred forty-two thousand, one hundred forty-two".