42523434 has 32 divisors (see below), whose sum is σ = 97055040. Its totient is φ = 13790736.

The previous prime is 42523433. The next prime is 42523451. The reversal of 42523434 is 43432524.

42523434 is a `hidden beast` number, since 425 + 234 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42523398 and 42523407.

It is not an unprimeable number, because it can be changed into a prime (42523433) 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, 8644 + ... + 12639.

It is an arithmetic number, because the mean of its divisors is an integer number (3032970).

Almost surely, 2^42523434 is an apocalyptic number.

42523434 is an abundant number, since it is smaller than the sum of its proper divisors (54531606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42523434 is a wasteful number, since it uses less digits than its factorization.

42523434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21331 (or 21325 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 42523434 is about 6520.9994632725. Note that the first 3 decimals coincide. The cubic root of 42523434 is about 349.0407310913.

Adding to 42523434 its reverse (43432524), we get a palindrome (85955958).

The spelling of 42523434 in words is "forty-two million, five hundred twenty-three thousand, four hundred thirty-four".