187420421344 has 36 divisors (see below), whose sum is σ = 399550684176. Its totient is φ = 86501730432.

The previous prime is 187420421327. The next prime is 187420421347. The reversal of 187420421344 is 443124024781.

It is a junction number, because it is equal to n+sod(n) for n = 187420421297 and 187420421306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187420421347) 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, 17322664 + ... + 17333479.

It is an arithmetic number, because the mean of its divisors is an integer number (11098630116).

Almost surely, 2^187420421344 is an apocalyptic number.

It is an amenable number.

187420421344 is an abundant number, since it is smaller than the sum of its proper divisors (212130262832).

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

187420421344 is a wasteful number, since it uses less digits than its factorization.

187420421344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34656179 (or 34656158 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The spelling of 187420421344 in words is "one hundred eighty-seven billion, four hundred twenty million, four hundred twenty-one thousand, three hundred forty-four".