45681442 has 8 divisors (see below), whose sum is σ = 69815196. Its totient is φ = 22409712.

The previous prime is 45681413. The next prime is 45681469. The reversal of 45681442 is 24418654.

It can be written as a sum of positive squares in 2 ways, for example, as 45010681 + 670761 = 6709^2 + 819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 45681398 and 45681407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215373 + ... + 215584.

Almost surely, 2^45681442 is an apocalyptic number.

45681442 is a deficient number, since it is larger than the sum of its proper divisors (24133754).

45681442 is a wasteful number, since it uses less digits than its factorization.

45681442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431012.

The product of its digits is 30720, while the sum is 34.

The square root of 45681442 is about 6758.8047759941. The cubic root of 45681442 is about 357.4757627789.

The spelling of 45681442 in words is "forty-five million, six hundred eighty-one thousand, four hundred forty-two".