1400343040421 has 8 divisors (see below), whose sum is σ = 1560063865080. Its totient is φ = 1248051091392.

The previous prime is 1400343040403. The next prime is 1400343040463. The reversal of 1400343040421 is 1240403430041.

It can be written as a sum of positive squares in 4 ways, for example, as 10099245025 + 1390243795396 = 100495^2 + 1179086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400343040421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400343040021) 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, 1857218510 + ... + 1857219263.

It is an arithmetic number, because the mean of its divisors is an integer number (195007983135).

Almost surely, 2^{1400343040421} is an apocalyptic number.

It is an amenable number.

1400343040421 is a deficient number, since it is larger than the sum of its proper divisors (159720824659).

1400343040421 is a wasteful number, since it uses less digits than its factorization.

1400343040421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714437815.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1400343040421 its reverse (1240403430041), we get a palindrome (2640746470462).

The spelling of 1400343040421 in words is "one trillion, four hundred billion, three hundred forty-three million, forty thousand, four hundred twenty-one".