4002689861942 has 4 divisors (see below), whose sum is σ = 6004034792916. Its totient is φ = 2001344930970.

The previous prime is 4002689861909. The next prime is 4002689861971. The reversal of 4002689861942 is 2491689862004.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×4002689861942² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000672465484 + ... + 1000672465487.

It is an arithmetic number, because the mean of its divisors is an integer number (1501008698229).

Almost surely, 2^{4002689861942} is an apocalyptic number.

4002689861942 is a deficient number, since it is larger than the sum of its proper divisors (2001344930974).

4002689861942 is a wasteful number, since it uses less digits than its factorization.

4002689861942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001344930973.

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 4002689861942 in words is "four trillion, two billion, six hundred eighty-nine million, eight hundred sixty-one thousand, nine hundred forty-two".