100040145 has 24 divisors (see below), whose sum is σ = 163918656. Its totient is φ = 52099488.

The previous prime is 100040113. The next prime is 100040201. The reversal of 100040145 is 541040001.

It is not a de Polignac number, because 100040145 - 2⁵ = 100040113 is a prime.

It is a super-2 number, since 2×100040145² = 20016061223242050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25932 + ... + 29538.

It is an arithmetic number, because the mean of its divisors is an integer number (6829944).

Almost surely, 2^100040145 is an apocalyptic number.

100040145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100040145 is a deficient number, since it is larger than the sum of its proper divisors (63878511).

100040145 is an equidigital number, since it uses as much as digits as its factorization.

100040145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701 (or 3658 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100040145 is about 10002.0070485878. The cubic root of 100040145 is about 464.2209872461.

Adding to 100040145 its reverse (541040001), we get a palindrome (641080146).

The spelling of 100040145 in words is "one hundred million, forty thousand, one hundred forty-five".