42451234 has 32 divisors (see below), whose sum is σ = 75119616. Its totient is φ = 17614800.

The previous prime is 42451229. The next prime is 42451237. The reversal of 42451234 is 43215424.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42451199 and 42451208.

It is not an unprimeable number, because it can be changed into a prime (42451237) 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, 90669 + ... + 91135.

It is an arithmetic number, because the mean of its divisors is an integer number (2347488).

Almost surely, 2^42451234 is an apocalyptic number.

42451234 is a deficient number, since it is larger than the sum of its proper divisors (32668382).

42451234 is a wasteful number, since it uses less digits than its factorization.

42451234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its digits is 3840, while the sum is 25.

The square root of 42451234 is about 6515.4611502180. The cubic root of 42451234 is about 348.8430752377.

Adding to 42451234 its reverse (43215424), we get a palindrome (85666658).

The spelling of 42451234 in words is "forty-two million, four hundred fifty-one thousand, two hundred thirty-four".