42052501 has 4 divisors (see below), whose sum is σ = 42209100. Its totient is φ = 41895904.

The previous prime is 42052499. The next prime is 42052513. The reversal of 42052501 is 10525024.

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 10400625 + 31651876 = 3225^2 + 5626^2 .

It is a cyclic number.

It is not a de Polignac number, because 42052501 - 2¹ = 42052499 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 (42058501) 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, 77896 + ... + 78433.

It is an arithmetic number, because the mean of its divisors is an integer number (10552275).

Almost surely, 2^42052501 is an apocalyptic number.

It is an amenable number.

42052501 is a deficient number, since it is larger than the sum of its proper divisors (156599).

42052501 is a wasteful number, since it uses less digits than its factorization.

42052501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156598.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42052501 is about 6484.7899734687. The cubic root of 42052501 is about 347.7474413828.

Adding to 42052501 its reverse (10525024), we get a palindrome (52577525).

The spelling of 42052501 in words is "forty-two million, fifty-two thousand, five hundred one".