42151513 has 4 divisors (see below), whose sum is σ = 42171408. Its totient is φ = 42131620.

The previous prime is 42151511. The next prime is 42151523. The reversal of 42151513 is 31515124.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 42151513 - 2¹ = 42151511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42151511) 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, 6331 + ... + 11152.

It is an arithmetic number, because the mean of its divisors is an integer number (10542852).

Almost surely, 2^42151513 is an apocalyptic number.

It is an amenable number.

42151513 is a deficient number, since it is larger than the sum of its proper divisors (19895).

42151513 is a wasteful number, since it uses less digits than its factorization.

42151513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19894.

The product of its digits is 600, while the sum is 22.

The square root of 42151513 is about 6492.4196567998. The cubic root of 42151513 is about 348.0201495577.

Adding to 42151513 its reverse (31515124), we get a palindrome (73666637).

The spelling of 42151513 in words is "forty-two million, one hundred fifty-one thousand, five hundred thirteen".