1202040300040 has 64 divisors (see below), whose sum is σ = 2748548406960. Its totient is φ = 473034608640.

The previous prime is 1202040300017. The next prime is 1202040300047. The reversal of 1202040300040 is 400030402021.

It can be written as a sum of positive squares in 8 ways, for example, as 921027928804 + 281012371236 = 959702^2 + 530106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1202040299987 and 1202040300023.

It is not an unprimeable number, because it can be changed into a prime (1202040300047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640780 + ... + 1677700.

Almost surely, 2^{1202040300040} is an apocalyptic number.

1202040300040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202040300040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374274203480).

1202040300040 is an abundant number, since it is smaller than the sum of its proper divisors (1546508106920).

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

1202040300040 is a wasteful number, since it uses less digits than its factorization.

1202040300040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037402 (or 1037398 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 1202040300040 its reverse (400030402021), we get a palindrome (1602070702061).

The spelling of 1202040300040 in words is "one trillion, two hundred two billion, forty million, three hundred thousand, forty".