42451149626 has 4 divisors (see below), whose sum is σ = 63676724442. Its totient is φ = 21225574812.

The previous prime is 42451149619. The next prime is 42451149659. The reversal of 42451149626 is 62694115424.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 32561841601 + 9889308025 = 180449^2 + 99445^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612787405 + ... + 10612787408.

Almost surely, 2^42451149626 is an apocalyptic number.

42451149626 is a deficient number, since it is larger than the sum of its proper divisors (21225574816).

42451149626 is a wasteful number, since it uses less digits than its factorization.

42451149626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21225574815.

The product of its digits is 414720, while the sum is 44.

The spelling of 42451149626 in words is "forty-two billion, four hundred fifty-one million, one hundred forty-nine thousand, six hundred twenty-six".