1977009042 has 8 divisors (see below), whose sum is σ = 3954018096. Its totient is φ = 659003012.

The previous prime is 1977009031. The next prime is 1977009059. The reversal of 1977009042 is 2409007791.

It is a sphenic number, since it is the product of 3 distinct primes.

1977009042 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 164750748 + ... + 164750759.

It is an arithmetic number, because the mean of its divisors is an integer number (494252262).

Almost surely, 2^1977009042 is an apocalyptic number.

1977009042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1977009042 is a wasteful number, since it uses less digits than its factorization.

1977009042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329501512.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 1977009042 is about 44463.5698296932. The cubic root of 1977009042 is about 1255.0746328954.

The spelling of 1977009042 in words is "one billion, nine hundred seventy-seven million, nine thousand, forty-two".