42523574 has 4 divisors (see below), whose sum is σ = 63785364. Its totient is φ = 21261786.

The previous prime is 42523571. The next prime is 42523583. The reversal of 42523574 is 47532524.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42523574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42523571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10630892 + ... + 10630895.

It is an arithmetic number, because the mean of its divisors is an integer number (15946341).

Almost surely, 2^42523574 is an apocalyptic number.

42523574 is a deficient number, since it is larger than the sum of its proper divisors (21261790).

42523574 is a wasteful number, since it uses less digits than its factorization.

42523574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21261789.

The product of its digits is 33600, while the sum is 32.

The square root of 42523574 is about 6521.0101978144. The cubic root of 42523574 is about 349.0411141400.

The spelling of 42523574 in words is "forty-two million, five hundred twenty-three thousand, five hundred seventy-four".