637142443 has 12 divisors (see below), whose sum is σ = 744502080. Its totient is φ = 543663792.

The previous prime is 637142423. The next prime is 637142449. The reversal of 637142443 is 344241736.

It is not a de Polignac number, because 637142443 - 2²¹ = 635045291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 637142399 and 637142408.

It is not an unprimeable number, because it can be changed into a prime (637142449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18228 + ... + 40081.

It is an arithmetic number, because the mean of its divisors is an integer number (62041840).

Almost surely, 2^637142443 is an apocalyptic number.

637142443 is a deficient number, since it is larger than the sum of its proper divisors (107359637).

637142443 is a wasteful number, since it uses less digits than its factorization.

637142443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58546 (or 58539 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 637142443 is about 25241.6806690838. The cubic root of 637142443 is about 860.4893748893.

The spelling of 637142443 in words is "six hundred thirty-seven million, one hundred forty-two thousand, four hundred forty-three".