1402020121431 has 8 divisors (see below), whose sum is σ = 1871477221120. Its totient is φ = 933621551352.

The previous prime is 1402020121427. The next prime is 1402020121451. The reversal of 1402020121431 is 1341210202041.

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

It is not a de Polignac number, because 1402020121431 - 2² = 1402020121427 is a prime.

It is a super-2 number, since 2×1402020121431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1402020121398 and 1402020121407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402020121421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264629311 + ... + 264634608.

It is an arithmetic number, because the mean of its divisors is an integer number (233934652640).

Almost surely, 2^{1402020121431} is an apocalyptic number.

1402020121431 is a deficient number, since it is larger than the sum of its proper divisors (469457099689).

1402020121431 is an equidigital number, since it uses as much as digits as its factorization.

1402020121431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529264805.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1402020121431 its reverse (1341210202041), we get a palindrome (2743230323472).

The spelling of 1402020121431 in words is "one trillion, four hundred two billion, twenty million, one hundred twenty-one thousand, four hundred thirty-one".