45123902 has 4 divisors (see below), whose sum is σ = 67685856. Its totient is φ = 22561950.

The previous prime is 45123893. The next prime is 45123961. The reversal of 45123902 is 20932154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20932154 = 2 ⋅10466077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11280974 + ... + 11280977.

It is an arithmetic number, because the mean of its divisors is an integer number (16921464).

Almost surely, 2^45123902 is an apocalyptic number.

45123902 is a deficient number, since it is larger than the sum of its proper divisors (22561954).

45123902 is a wasteful number, since it uses less digits than its factorization.

45123902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22561953.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 45123902 is about 6717.4326941176. The cubic root of 45123902 is about 356.0154803267.

The spelling of 45123902 in words is "forty-five million, one hundred twenty-three thousand, nine hundred two".