2029821190420 has 24 divisors (see below), whose sum is σ = 4332503592648. Its totient is φ = 798618172800.

The previous prime is 2029821190399. The next prime is 2029821190429. The reversal of 2029821190420 is 240911289202.

It can be written as a sum of positive squares in 4 ways, for example, as 259527075844 + 1770294114576 = 509438^2 + 1330524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2029821190429) 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, 831892711 + ... + 831895150.

It is an arithmetic number, because the mean of its divisors is an integer number (180520983027).

Almost surely, 2^{2029821190420} is an apocalyptic number.

2029821190420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2029821190420 is an abundant number, since it is smaller than the sum of its proper divisors (2302682402228).

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

2029821190420 is a wasteful number, since it uses less digits than its factorization.

2029821190420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663787931 (or 1663787929 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 2029821190420 in words is "two trillion, twenty-nine billion, eight hundred twenty-one million, one hundred ninety thousand, four hundred twenty".