42500003 has 24 divisors (see below), whose sum is σ = 53740512. Its totient is φ = 33312384.

The previous prime is 42499999. The next prime is 42500023. The reversal of 42500003 is 30000524.

It is not a de Polignac number, because 42500003 - 2² = 42499999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42500023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87026 + ... + 87512.

It is an arithmetic number, because the mean of its divisors is an integer number (2239188).

Almost surely, 2^42500003 is an apocalyptic number.

42500003 is a deficient number, since it is larger than the sum of its proper divisors (11240509).

42500003 is a wasteful number, since it uses less digits than its factorization.

42500003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 42500003 is about 6519.2026352921. The cubic root of 42500003 is about 348.9766105567.

Adding to 42500003 its reverse (30000524), we get a palindrome (72500527).

The spelling of 42500003 in words is "forty-two million, five hundred thousand, three".