42513155 has 16 divisors (see below), whose sum is σ = 52402464. Its totient is φ = 33096960.

The previous prime is 42513143. The next prime is 42513169. The reversal of 42513155 is 55131524.

It is not a de Polignac number, because 42513155 - 2⁶ = 42513091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35720 + ... + 36890.

It is an arithmetic number, because the mean of its divisors is an integer number (3275154).

Almost surely, 2^42513155 is an apocalyptic number.

42513155 is a deficient number, since it is larger than the sum of its proper divisors (9889309).

42513155 is a wasteful number, since it uses less digits than its factorization.

42513155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366.

The product of its digits is 3000, while the sum is 26.

The square root of 42513155 is about 6520.2112695832. The cubic root of 42513155 is about 349.0126048052.

Adding to 42513155 its reverse (55131524), we get a palindrome (97644679).

The spelling of 42513155 in words is "forty-two million, five hundred thirteen thousand, one hundred fifty-five".