42156066433 has 8 divisors (see below), whose sum is σ = 45424073576. Its totient is φ = 38891664000.

The previous prime is 42156066409. The next prime is 42156066451. The reversal of 42156066433 is 33466065124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3877926529 + 38278139904 = 62273^2 + 195648^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42156066433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42156060433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876858 + ... + 923683.

It is an arithmetic number, because the mean of its divisors is an integer number (5678009197).

Almost surely, 2^42156066433 is an apocalyptic number.

It is an amenable number.

42156066433 is a deficient number, since it is larger than the sum of its proper divisors (3268007143).

42156066433 is a wasteful number, since it uses less digits than its factorization.

42156066433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802355.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 42156066433 in words is "forty-two billion, one hundred fifty-six million, sixty-six thousand, four hundred thirty-three".