100422540 has 36 divisors (see below), whose sum is σ = 304615584. Its totient is φ = 26779296.

The previous prime is 100422473. The next prime is 100422541. The reversal of 100422540 is 45224001.

100422540 is a `hidden beast` number, since 100 + 4 + 22 + 540 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (100422541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278772 + ... + 279131.

It is an arithmetic number, because the mean of its divisors is an integer number (8461544).

Almost surely, 2^100422540 is an apocalyptic number.

100422540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100422540 is an abundant number, since it is smaller than the sum of its proper divisors (204193044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100422540 is a wasteful number, since it uses less digits than its factorization.

100422540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557918 (or 557913 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 100422540 is about 10021.1047295196. The cubic root of 100422540 is about 464.8117170436.

Adding to 100422540 its reverse (45224001), we get a palindrome (145646541).

The spelling of 100422540 in words is "one hundred million, four hundred twenty-two thousand, five hundred forty".