1421400431040 has 112 divisors (see below), whose sum is σ = 4563653905440. Its totient is φ = 374781214720.

The previous prime is 1421400431039. The next prime is 1421400431041. The reversal of 1421400431040 is 401340041241.

It is an interprime number because it is at equal distance from previous prime (1421400431039) and next prime (1421400431041).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1421400431040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421400431041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8232681 + ... + 8403560.

It is an arithmetic number, because the mean of its divisors is an integer number (40746909870).

Almost surely, 2^{1421400431040} is an apocalyptic number.

1421400431040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421400431040 is an abundant number, since it is smaller than the sum of its proper divisors (3142253474400).

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

1421400431040 is a wasteful number, since it uses less digits than its factorization.

1421400431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636350 (or 16636340 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1421400431040 its reverse (401340041241), we get a palindrome (1822740472281).

The spelling of 1421400431040 in words is "one trillion, four hundred twenty-one billion, four hundred million, four hundred thirty-one thousand, forty".