100420646 has 8 divisors (see below), whose sum is σ = 150967800. Its totient is φ = 50098048.

The previous prime is 100420583. The next prime is 100420657. The reversal of 100420646 is 646024001.

It is a happy number.

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

It is a super-2 number, since 2×100420646² = 20168612286114632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55016 + ... + 56811.

It is an arithmetic number, because the mean of its divisors is an integer number (18870975).

Almost surely, 2^100420646 is an apocalyptic number.

100420646 is a deficient number, since it is larger than the sum of its proper divisors (50547154).

100420646 is a wasteful number, since it uses less digits than its factorization.

100420646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112278.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 100420646 is about 10021.0102285149. The cubic root of 100420646 is about 464.8087948612.

Adding to 100420646 its reverse (646024001), we get a palindrome (746444647).

The spelling of 100420646 in words is "one hundred million, four hundred twenty thousand, six hundred forty-six".