42510503501 has 4 divisors (see below), whose sum is σ = 45011121372. Its totient is φ = 40009885632.

The previous prime is 42510503489. The next prime is 42510503527. The reversal of 42510503501 is 10530501524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20702893225 + 21807610276 = 143885^2 + 147674^2 .

It is a cyclic number.

It is not a de Polignac number, because 42510503501 - 2¹⁰ = 42510502477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42510503201) 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, 1250308910 + ... + 1250308943.

It is an arithmetic number, because the mean of its divisors is an integer number (11252780343).

Almost surely, 2^42510503501 is an apocalyptic number.

It is an amenable number.

42510503501 is a deficient number, since it is larger than the sum of its proper divisors (2500617871).

42510503501 is a wasteful number, since it uses less digits than its factorization.

42510503501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500617870.

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

The spelling of 42510503501 in words is "forty-two billion, five hundred ten million, five hundred three thousand, five hundred one".