45212430442 has 4 divisors (see below), whose sum is σ = 67818645666. Its totient is φ = 22606215220.

The previous prime is 45212430397. The next prime is 45212430443. The reversal of 45212430442 is 24403421254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24403421254 = 2 ⋅12201710627.

It can be written as a sum of positive squares in only one way, i.e., 45130328721 + 82101721 = 212439^2 + 9061^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45212430443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11303107609 + ... + 11303107612.

Almost surely, 2^45212430442 is an apocalyptic number.

45212430442 is a deficient number, since it is larger than the sum of its proper divisors (22606215224).

45212430442 is a wasteful number, since it uses less digits than its factorization.

45212430442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22606215223.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 45212430442 its reverse (24403421254), we get a palindrome (69615851696).

The spelling of 45212430442 in words is "forty-five billion, two hundred twelve million, four hundred thirty thousand, four hundred forty-two".