45402130 has 16 divisors (see below), whose sum is σ = 81805464. Its totient is φ = 18142720.

The previous prime is 45402103. The next prime is 45402143. The reversal of 45402130 is 3120454.

It can be written as a sum of positive squares in 4 ways, for example, as 45198729 + 203401 = 6723^2 + 451^2 .

It is a super-2 number, since 2×45402130² = 4122706817073800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45402098 and 45402107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13410 + ... + 16450.

Almost surely, 2^45402130 is an apocalyptic number.

45402130 is a deficient number, since it is larger than the sum of its proper divisors (36403334).

45402130 is a wasteful number, since it uses less digits than its factorization.

45402130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 45402130 is about 6738.1102692075. The cubic root of 45402130 is about 356.7456963295.

Adding to 45402130 its reverse (3120454), we get a palindrome (48522584).

It can be divided in two parts, 4540 and 2130, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 45402130 in words is "forty-five million, four hundred two thousand, one hundred thirty".