42131465 has 8 divisors (see below), whose sum is σ = 51079560. Its totient is φ = 33357312.

The previous prime is 42131431. The next prime is 42131483. The reversal of 42131465 is 56413124.

It can be written as a sum of positive squares in 4 ways, for example, as 1885129 + 40246336 = 1373^2 + 6344^2 .

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 42131465 - 2¹⁰ = 42130441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42950 + ... + 43919.

It is an arithmetic number, because the mean of its divisors is an integer number (6384945).

Almost surely, 2^42131465 is an apocalyptic number.

It is an amenable number.

42131465 is a deficient number, since it is larger than the sum of its proper divisors (8948095).

42131465 is an equidigital number, since it uses as much as digits as its factorization.

42131465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86971.

The product of its digits is 2880, while the sum is 26.

The square root of 42131465 is about 6490.8755187571. The cubic root of 42131465 is about 347.9649659760.

Adding to 42131465 its reverse (56413124), we get a palindrome (98544589).

The spelling of 42131465 in words is "forty-two million, one hundred thirty-one thousand, four hundred sixty-five".