42451634 has 4 divisors (see below), whose sum is σ = 63677454. Its totient is φ = 21225816.

The previous prime is 42451631. The next prime is 42451637. The reversal of 42451634 is 43615424.

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

It is an interprime number because it is at equal distance from previous prime (42451631) and next prime (42451637).

It can be written as a sum of positive squares in only one way, i.e., 26491609 + 15960025 = 5147^2 + 3995^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42451597 and 42451606.

It is not an unprimeable number, because it can be changed into a prime (42451631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612907 + ... + 10612910.

Almost surely, 2^42451634 is an apocalyptic number.

42451634 is a deficient number, since it is larger than the sum of its proper divisors (21225820).

42451634 is a wasteful number, since it uses less digits than its factorization.

42451634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21225819.

The product of its digits is 11520, while the sum is 29.

The square root of 42451634 is about 6515.4918463613. The cubic root of 42451634 is about 348.8441709011.

The spelling of 42451634 in words is "forty-two million, four hundred fifty-one thousand, six hundred thirty-four".