100422145 has 8 divisors (see below), whose sum is σ = 127595304. Its totient is φ = 75611904.

The previous prime is 100422143. The next prime is 100422191. The reversal of 100422145 is 541224001.

It can be written as a sum of positive squares in 4 ways, for example, as 4068289 + 96353856 = 2017^2 + 9816^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 100422145 - 2¹ = 100422143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100422143) 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, 590634 + ... + 590803.

It is an arithmetic number, because the mean of its divisors is an integer number (15949413).

Almost surely, 2^100422145 is an apocalyptic number.

It is an amenable number.

100422145 is a deficient number, since it is larger than the sum of its proper divisors (27173159).

100422145 is a wasteful number, since it uses less digits than its factorization.

100422145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181459.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 100422145 is about 10021.0850210943. The cubic root of 100422145 is about 464.8111076158.

Adding to 100422145 its reverse (541224001), we get a palindrome (641646146).

The spelling of 100422145 in words is "one hundred million, four hundred twenty-two thousand, one hundred forty-five".