42081351437 has 8 divisors (see below), whose sum is σ = 42874360056. Its totient is φ = 41294195712.

The previous prime is 42081351401. The next prime is 42081351463. The reversal of 42081351437 is 73415318024.

It can be written as a sum of positive squares in 4 ways, for example, as 21931832836 + 20149518601 = 148094^2 + 141949^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42081351437 - 2⁸ = 42081351181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42081351437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42081351737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448708 + ... + 1477469.

It is an arithmetic number, because the mean of its divisors is an integer number (5359295007).

Almost surely, 2^42081351437 is an apocalyptic number.

It is an amenable number.

42081351437 is a deficient number, since it is larger than the sum of its proper divisors (793008619).

42081351437 is a wasteful number, since it uses less digits than its factorization.

42081351437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926447.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 42081351437 in words is "forty-two billion, eighty-one million, three hundred fifty-one thousand, four hundred thirty-seven".