145401003 has 24 divisors (see below), whose sum is σ = 232882416. Its totient is φ = 86673600.

The previous prime is 145400999. The next prime is 145401013. The reversal of 145401003 is 300104541.

It is a happy number.

It is not a de Polignac number, because 145401003 - 2² = 145400999 is a prime.

It is a super-2 number, since 2×145401003² = 42282903346812018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145401013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6000 + ... + 18077.

It is an arithmetic number, because the mean of its divisors is an integer number (9703434).

Almost surely, 2^145401003 is an apocalyptic number.

145401003 is a deficient number, since it is larger than the sum of its proper divisors (87481413).

145401003 is a wasteful number, since it uses less digits than its factorization.

145401003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24155 (or 24152 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 145401003 is about 12058.2338258967. The cubic root of 145401003 is about 525.8426413686.

Adding to 145401003 its reverse (300104541), we get a palindrome (445505544).

The spelling of 145401003 in words is "one hundred forty-five million, four hundred one thousand, three".