42150613 has 4 divisors (see below), whose sum is σ = 42242508. Its totient is φ = 42058720.

The previous prime is 42150611. The next prime is 42150623. The reversal of 42150613 is 31605124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8892324 + 33258289 = 2982^2 + 5767^2 .

It is a cyclic number.

It is not a de Polignac number, because 42150613 - 2¹ = 42150611 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 (42150611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45256 + ... + 46177.

It is an arithmetic number, because the mean of its divisors is an integer number (10560627).

Almost surely, 2^42150613 is an apocalyptic number.

It is an amenable number.

42150613 is a deficient number, since it is larger than the sum of its proper divisors (91895).

42150613 is an equidigital number, since it uses as much as digits as its factorization.

42150613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91894.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 42150613 is about 6492.3503448289. The cubic root of 42150613 is about 348.0176726173.

Adding to 42150613 its reverse (31605124), we get a palindrome (73755737).

The spelling of 42150613 in words is "forty-two million, one hundred fifty thousand, six hundred thirteen".