145988403 has 16 divisors (see below), whose sum is σ = 212823936. Its totient is φ = 88279040.

The previous prime is 145988369. The next prime is 145988411. The reversal of 145988403 is 304889541.

It is a cyclic number.

It is not a de Polignac number, because 145988403 - 2¹⁴ = 145972019 is a prime.

It is a super-2 number, since 2×145988403² = 42625227620980818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145988473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10675 + ... + 20147.

It is an arithmetic number, because the mean of its divisors is an integer number (13301496).

Almost surely, 2^145988403 is an apocalyptic number.

145988403 is a deficient number, since it is larger than the sum of its proper divisors (66835533).

145988403 is a wasteful number, since it uses less digits than its factorization.

145988403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9954.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 145988403 is about 12082.5660767901. The cubic root of 145988403 is about 526.5498005308.

The spelling of 145988403 in words is "one hundred forty-five million, nine hundred eighty-eight thousand, four hundred three".