42505131066420 has 48 divisors (see below), whose sum is σ = 129833854895808. Its totient is φ = 10304274197760.

The previous prime is 42505131066397. The next prime is 42505131066473. The reversal of 42505131066420 is 2466013150524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32200856209 + ... + 32200857528.

It is an arithmetic number, because the mean of its divisors is an integer number (2704871976996).

Almost surely, 2^{42505131066420} is an apocalyptic number.

It is an amenable number.

42505131066420 is an abundant number, since it is smaller than the sum of its proper divisors (87328723829388).

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

42505131066420 is a wasteful number, since it uses less digits than its factorization.

42505131066420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64401713760 (or 64401713758 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 42505131066420 in words is "forty-two trillion, five hundred five billion, one hundred thirty-one million, sixty-six thousand, four hundred twenty".