45402123 has 16 divisors (see below), whose sum is σ = 65592576. Its totient is φ = 27768480.

The previous prime is 45402103. The next prime is 45402143. The reversal of 45402123 is 32120454.

It is an interprime number because it is at equal distance from previous prime (45402103) and next prime (45402143).

It is not a de Polignac number, because 45402123 - 2⁶ = 45402059 is a prime.

It is a super-2 number, since 2×45402123² = 4122705545814258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45402123.

It is not an unprimeable number, because it can be changed into a prime (45402103) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3028 + ... + 9998.

It is an arithmetic number, because the mean of its divisors is an integer number (4099536).

Almost surely, 2^45402123 is an apocalyptic number.

45402123 is a deficient number, since it is larger than the sum of its proper divisors (20190453).

45402123 is a wasteful number, since it uses less digits than its factorization.

45402123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 45402123 is about 6738.1097497740. The cubic root of 45402123 is about 356.7456779954.

Adding to 45402123 its reverse (32120454), we get a palindrome (77522577).

The spelling of 45402123 in words is "forty-five million, four hundred two thousand, one hundred twenty-three".