42115413 has 4 divisors (see below), whose sum is σ = 56153888. Its totient is φ = 28076940.

The previous prime is 42115399. The next prime is 42115417. The reversal of 42115413 is 31451124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42115413 - 2⁴ = 42115397 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 42115413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42115417) 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, 7019233 + ... + 7019238.

It is an arithmetic number, because the mean of its divisors is an integer number (14038472).

Almost surely, 2^42115413 is an apocalyptic number.

It is an amenable number.

42115413 is a deficient number, since it is larger than the sum of its proper divisors (14038475).

42115413 is a wasteful number, since it uses less digits than its factorization.

42115413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14038474.

The product of its digits is 480, while the sum is 21.

The square root of 42115413 is about 6489.6388959633. The cubic root of 42115413 is about 347.9207690545.

Adding to 42115413 its reverse (31451124), we get a palindrome (73566537).

The spelling of 42115413 in words is "forty-two million, one hundred fifteen thousand, four hundred thirteen".