42140253 has 16 divisors (see below), whose sum is σ = 58873856. Its totient is φ = 26777520.

The previous prime is 42140243. The next prime is 42140257. The reversal of 42140253 is 35204124.

It is not a de Polignac number, because 42140253 - 2⁴ = 42140237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42140257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2850 + ... + 9612.

It is an arithmetic number, because the mean of its divisors is an integer number (3679616).

Almost surely, 2^42140253 is an apocalyptic number.

It is an amenable number.

42140253 is a deficient number, since it is larger than the sum of its proper divisors (16733603).

42140253 is a wasteful number, since it uses less digits than its factorization.

42140253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42140253 is about 6491.5524337403. The cubic root of 42140253 is about 347.9891577412.

Adding to 42140253 its reverse (35204124), we get a palindrome (77344377).

The spelling of 42140253 in words is "forty-two million, one hundred forty thousand, two hundred fifty-three".