42502155 has 8 divisors (see below), whose sum is σ = 68003472. Its totient is φ = 22667808.

The previous prime is 42502153. The next prime is 42502157. The reversal of 42502155 is 55120524.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42502153) and next prime (42502157).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42502155 - 2¹ = 42502153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42502153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416724 + ... + 1416753.

It is an arithmetic number, because the mean of its divisors is an integer number (8500434).

Almost surely, 2^42502155 is an apocalyptic number.

42502155 is a deficient number, since it is larger than the sum of its proper divisors (25501317).

42502155 is a wasteful number, since it uses less digits than its factorization.

42502155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833485.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 42502155 is about 6519.3676840626. The cubic root of 42502155 is about 348.9825006346.

Adding to 42502155 its reverse (55120524), we get a palindrome (97622679).

The spelling of 42502155 in words is "forty-two million, five hundred two thousand, one hundred fifty-five".