45187442 has 4 divisors (see below), whose sum is σ = 67781166. Its totient is φ = 22593720.

The previous prime is 45187421. The next prime is 45187463. The reversal of 45187442 is 24478154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24478154 = 2 ⋅12239077.

It is an interprime number because it is at equal distance from previous prime (45187421) and next prime (45187463).

It can be written as a sum of positive squares in only one way, i.e., 26429881 + 18757561 = 5141^2 + 4331^2 .

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 as a sum of consecutive naturals, namely, 11296859 + ... + 11296862.

Almost surely, 2^45187442 is an apocalyptic number.

45187442 is a deficient number, since it is larger than the sum of its proper divisors (22593724).

45187442 is a wasteful number, since it uses less digits than its factorization.

45187442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22593723.

The product of its digits is 35840, while the sum is 35.

The square root of 45187442 is about 6722.1605157866. The cubic root of 45187442 is about 356.1825064710.

The spelling of 45187442 in words is "forty-five million, one hundred eighty-seven thousand, four hundred forty-two".