1020434402420 has 12 divisors (see below), whose sum is σ = 2142912245124. Its totient is φ = 408173760960.

The previous prime is 1020434402399. The next prime is 1020434402431. The reversal of 1020434402420 is 242044340201.

It is a happy number.

1020434402420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 714373182436 + 306061219984 = 845206^2 + 553228^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1020434402420.

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, 25510860041 + ... + 25510860080.

It is an arithmetic number, because the mean of its divisors is an integer number (178576020427).

Almost surely, 2^{1020434402420} is an apocalyptic number.

1020434402420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020434402420 is an abundant number, since it is smaller than the sum of its proper divisors (1122477842704).

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

1020434402420 is a wasteful number, since it uses less digits than its factorization.

1020434402420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51021720130 (or 51021720128 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 1020434402420 its reverse (242044340201), we get a palindrome (1262478742621).

The spelling of 1020434402420 in words is "one trillion, twenty billion, four hundred thirty-four million, four hundred two thousand, four hundred twenty".