1642037740242 has 8 divisors (see below), whose sum is σ = 3284075480496. Its totient is φ = 547345913412.

The previous prime is 1642037740223. The next prime is 1642037740283. The reversal of 1642037740242 is 2420477302461.

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

1642037740242 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1642037740194 and 1642037740203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136836478348 + ... + 136836478359.

It is an arithmetic number, because the mean of its divisors is an integer number (410509435062).

Almost surely, 2^{1642037740242} is an apocalyptic number.

1642037740242 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.

1642037740242 is a wasteful number, since it uses less digits than its factorization.

1642037740242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273672956712.

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 1642037740242 in words is "one trillion, six hundred forty-two billion, thirty-seven million, seven hundred forty thousand, two hundred forty-two".