42145396100 has 18 divisors (see below), whose sum is σ = 91455509754. Its totient is φ = 16858158400.

The previous prime is 42145396081. The next prime is 42145396103. The reversal of 42145396100 is 169354124.

It can be written as a sum of positive squares in 3 ways, for example, as 162205696 + 41983190404 = 12736^2 + 204898^2 .

It is not an unprimeable number, because it can be changed into a prime (42145396103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210726881 + ... + 210727080.

It is an arithmetic number, because the mean of its divisors is an integer number (5080861653).

Almost surely, 2^42145396100 is an apocalyptic number.

It is an amenable number.

42145396100 is an abundant number, since it is smaller than the sum of its proper divisors (49310113654).

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

42145396100 is a wasteful number, since it uses less digits than its factorization.

42145396100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421453975 (or 421453968 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 42145396100 in words is "forty-two billion, one hundred forty-five million, three hundred ninety-six thousand, one hundred".