42501263 has 8 divisors (see below), whose sum is σ = 50684928. Its totient is φ = 34845624.

The previous prime is 42501259. The next prime is 42501287. The reversal of 42501263 is 36210524.

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

It is a cyclic number.

It is not a de Polignac number, because 42501263 - 2² = 42501259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42501253) 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, 131831 + ... + 132152.

It is an arithmetic number, because the mean of its divisors is an integer number (6335616).

Almost surely, 2^42501263 is an apocalyptic number.

42501263 is a deficient number, since it is larger than the sum of its proper divisors (8183665).

42501263 is a wasteful number, since it uses less digits than its factorization.

42501263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264013.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 42501263 is about 6519.2992721611. The cubic root of 42501263 is about 348.9800592324.

Adding to 42501263 its reverse (36210524), we get a palindrome (78711787).

The spelling of 42501263 in words is "forty-two million, five hundred one thousand, two hundred sixty-three".