45505142 has 4 divisors (see below), whose sum is σ = 68257716. Its totient is φ = 22752570.

The previous prime is 45505139. The next prime is 45505181. The reversal of 45505142 is 24150554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24150554 = 2 ⋅12075277.

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, 11376284 + ... + 11376287.

It is an arithmetic number, because the mean of its divisors is an integer number (17064429).

Almost surely, 2^45505142 is an apocalyptic number.

45505142 is a deficient number, since it is larger than the sum of its proper divisors (22752574).

45505142 is a wasteful number, since it uses less digits than its factorization.

45505142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22752573.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 45505142 is about 6745.7499212467. The cubic root of 45505142 is about 357.0152969669.

Adding to 45505142 its reverse (24150554), we get a palindrome (69655696).

The spelling of 45505142 in words is "forty-five million, five hundred five thousand, one hundred forty-two".