42102553 has 4 divisors (see below), whose sum is σ = 42998400. Its totient is φ = 41206708.

The previous prime is 42102539. The next prime is 42102563. The reversal of 42102553 is 35520124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42102553 - 2⁵ = 42102521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42102563) 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, 447853 + ... + 447946.

It is an arithmetic number, because the mean of its divisors is an integer number (10749600).

Almost surely, 2^42102553 is an apocalyptic number.

It is an amenable number.

42102553 is a deficient number, since it is larger than the sum of its proper divisors (895847).

42102553 is an equidigital number, since it uses as much as digits as its factorization.

42102553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895846.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42102553 is about 6488.6480101790. The cubic root of 42102553 is about 347.8853527524.

Adding to 42102553 its reverse (35520124), we get a palindrome (77622677).

The spelling of 42102553 in words is "forty-two million, one hundred two thousand, five hundred fifty-three".