42531437 has 8 divisors (see below), whose sum is σ = 45864504. Its totient is φ = 39207168.

The previous prime is 42531431. The next prime is 42531451. The reversal of 42531437 is 73413524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 203401 + 42328036 = 451^2 + 6506^2 .

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

It is not a de Polignac number, because 42531437 - 2⁶ = 42531373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42531431) 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, 10673 + ... + 14105.

It is an arithmetic number, because the mean of its divisors is an integer number (5733063).

Almost surely, 2^42531437 is an apocalyptic number.

It is an amenable number.

42531437 is a deficient number, since it is larger than the sum of its proper divisors (3333067).

42531437 is a wasteful number, since it uses less digits than its factorization.

42531437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4399.

The product of its digits is 10080, while the sum is 29.

The square root of 42531437 is about 6521.6130673323. The cubic root of 42531437 is about 349.0626264517.

The spelling of 42531437 in words is "forty-two million, five hundred thirty-one thousand, four hundred thirty-seven".