40100145 has 8 divisors (see below), whose sum is σ = 64160256. Its totient is φ = 21386736.

The previous prime is 40100129. The next prime is 40100147. The reversal of 40100145 is 54100104.

40100145 = 1998² + 1999² + ... + 2007².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40100145 - 2⁴ = 40100129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 2673343 = 40100145 / (4 + 0 + 1 + 0 + 0 + 1 + 4 + 5).

It is not an unprimeable number, because it can be changed into a prime (40100147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1336657 + ... + 1336686.

It is an arithmetic number, because the mean of its divisors is an integer number (8020032).

Almost surely, 2^40100145 is an apocalyptic number.

It is an amenable number.

40100145 is a deficient number, since it is larger than the sum of its proper divisors (24060111).

40100145 is a wasteful number, since it uses less digits than its factorization.

40100145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673351.

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

The square root of 40100145 is about 6332.4675285389. The cubic root of 40100145 is about 342.2803607155.

Adding to 40100145 its reverse (54100104), we get a palindrome (94200249).

The spelling of 40100145 in words is "forty million, one hundred thousand, one hundred forty-five".