42312453 has 4 divisors (see below), whose sum is σ = 56416608. Its totient is φ = 28208300.

The previous prime is 42312437. The next prime is 42312481. The reversal of 42312453 is 35421324.

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 42312453 - 2⁴ = 42312437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312493) 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, 7052073 + ... + 7052078.

It is an arithmetic number, because the mean of its divisors is an integer number (14104152).

Almost surely, 2^42312453 is an apocalyptic number.

It is an amenable number.

42312453 is a deficient number, since it is larger than the sum of its proper divisors (14104155).

42312453 is a wasteful number, since it uses less digits than its factorization.

42312453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104154.

The product of its digits is 2880, while the sum is 24.

The square root of 42312453 is about 6504.8023029144. The cubic root of 42312453 is about 348.4625158751.

Adding to 42312453 its reverse (35421324), we get a palindrome (77733777).

It can be divided in two parts, 42312 and 453, that multiplied together give a triangular number (19167336 = T₆₁₉₁).

The spelling of 42312453 in words is "forty-two million, three hundred twelve thousand, four hundred fifty-three".