42138531002 has 16 divisors (see below), whose sum is σ = 63831843072. Its totient is φ = 20861628480.

The previous prime is 42138530957. The next prime is 42138531013. The reversal of 42138531002 is 20013583124.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129893 + ... + 318039.

It is an arithmetic number, because the mean of its divisors is an integer number (3989490192).

Almost surely, 2^42138531002 is an apocalyptic number.

42138531002 is a deficient number, since it is larger than the sum of its proper divisors (21693312070).

42138531002 is a wasteful number, since it uses less digits than its factorization.

42138531002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189253.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 42138531002 in words is "forty-two billion, one hundred thirty-eight million, five hundred thirty-one thousand, two".