2100426420 has 48 divisors (see below), whose sum is σ = 5977617408. Its totient is φ = 550930560.

The previous prime is 2100426409. The next prime is 2100426431. The reversal of 2100426420 is 246240012.

It is an interprime number because it is at equal distance from previous prime (2100426409) and next prime (2100426431).

It is a super-2 number, since 2×2100426420² = 8823582291668032800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283284 + ... + 290603.

It is an arithmetic number, because the mean of its divisors is an integer number (124533696).

Almost surely, 2^2100426420 is an apocalyptic number.

2100426420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100426420 is an abundant number, since it is smaller than the sum of its proper divisors (3877190988).

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

2100426420 is a wasteful number, since it uses less digits than its factorization.

2100426420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573960 (or 573958 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2100426420 is about 45830.4093370330. The cubic root of 2100426420 is about 1280.6658360368.

Adding to 2100426420 its reverse (246240012), we get a palindrome (2346666432).

The spelling of 2100426420 in words is "two billion, one hundred million, four hundred twenty-six thousand, four hundred twenty".