1234402020 has 72 divisors (see below), whose sum is σ = 3865155840. Its totient is φ = 318553920.

The previous prime is 1234402003. The next prime is 1234402021. The reversal of 1234402020 is 202044321.

1234402020 is a `hidden beast` number, since 1 + 23 + 440 + 202 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1234401984 and 1234402002.

It is not an unprimeable number, because it can be changed into a prime (1234402021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105030 + ... + 116189.

It is an arithmetic number, because the mean of its divisors is an integer number (53682720).

Almost surely, 2^1234402020 is an apocalyptic number.

1234402020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234402020 is an abundant number, since it is smaller than the sum of its proper divisors (2630753820).

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

1234402020 is a wasteful number, since it uses less digits than its factorization.

1234402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221265 (or 221260 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1234402020 is about 35134.0578356671. The cubic root of 1234402020 is about 1072.7179337717.

Adding to 1234402020 its reverse (202044321), we get a palindrome (1436446341).

The spelling of 1234402020 in words is "one billion, two hundred thirty-four million, four hundred two thousand, twenty".