42453242 has 8 divisors (see below), whose sum is σ = 68578356. Its totient is φ = 19593792.

The previous prime is 42453227. The next prime is 42453247. The reversal of 42453242 is 24235424.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40462321 + 1990921 = 6361^2 + 1411^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1632817 = 42453242 / (4 + 2 + 4 + 5 + 3 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (42453247) 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, 816383 + ... + 816434.

Almost surely, 2^42453242 is an apocalyptic number.

42453242 is a deficient number, since it is larger than the sum of its proper divisors (26125114).

42453242 is a wasteful number, since it uses less digits than its factorization.

42453242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632832.

The product of its digits is 7680, while the sum is 26.

The square root of 42453242 is about 6515.6152433980. The cubic root of 42453242 is about 348.8485753986.

Adding to 42453242 its reverse (24235424), we get a palindrome (66688666).

The spelling of 42453242 in words is "forty-two million, four hundred fifty-three thousand, two hundred forty-two".