42502003155 has 16 divisors (see below), whose sum is σ = 75559116960. Its totient is φ = 22667734944.

The previous prime is 42502003147. The next prime is 42502003177. The reversal of 42502003155 is 55130020524.

It is a happy number.

42502003155 is a `hidden beast` number, since 4 + 2 + 502 + 0 + 0 + 3 + 155 = 666.

42502003155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42502003155 - 2³ = 42502003147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 157414692 + ... + 157414961.

It is an arithmetic number, because the mean of its divisors is an integer number (4722444810).

Almost surely, 2^42502003155 is an apocalyptic number.

42502003155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42502003155 is a deficient number, since it is larger than the sum of its proper divisors (33057113805).

42502003155 is a wasteful number, since it uses less digits than its factorization.

42502003155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314829667 (or 314829661 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 42502003155 its reverse (55130020524), we get a palindrome (97632023679).

The spelling of 42502003155 in words is "forty-two billion, five hundred two million, three thousand, one hundred fifty-five".