100420437 has 32 divisors (see below), whose sum is σ = 148756608. Its totient is φ = 59867136.

The previous prime is 100420427. The next prime is 100420447. The reversal of 100420437 is 734024001.

It is an interprime number because it is at equal distance from previous prime (100420427) and next prime (100420447).

It is not a de Polignac number, because 100420437 - 2⁴ = 100420421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390613 + ... + 390869.

It is an arithmetic number, because the mean of its divisors is an integer number (4648644).

Almost surely, 2^100420437 is an apocalyptic number.

It is an amenable number.

100420437 is a deficient number, since it is larger than the sum of its proper divisors (48336171).

100420437 is a wasteful number, since it uses less digits than its factorization.

100420437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 100420437 is about 10020.9998004191. Note that the first 3 decimals coincide. The cubic root of 100420437 is about 464.8084724006.

Adding to 100420437 its reverse (734024001), we get a palindrome (834444438).

The spelling of 100420437 in words is "one hundred million, four hundred twenty thousand, four hundred thirty-seven".