42129250836 has 24 divisors (see below), whose sum is σ = 98305277280. Its totient is φ = 14042556192.

The previous prime is 42129250831. The next prime is 42129250843. The reversal of 42129250836 is 63805292124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42129250831) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 396810 + ... + 491646.

It is an arithmetic number, because the mean of its divisors is an integer number (4096053220).

Almost surely, 2^42129250836 is an apocalyptic number.

It is an amenable number.

42129250836 is an abundant number, since it is smaller than the sum of its proper divisors (56176026444).

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

42129250836 is a wasteful number, since it uses less digits than its factorization.

42129250836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131863 (or 131861 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 42129250836 in words is "forty-two billion, one hundred twenty-nine million, two hundred fifty thousand, eight hundred thirty-six".