1421520402231 has 12 divisors (see below), whose sum is σ = 2054539007352. Its totient is φ = 947111763696.

The previous prime is 1421520402229. The next prime is 1421520402233. The reversal of 1421520402231 is 1322040251241.

1421520402231 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 5 + 20 + 402 + 231 = 666.

It is an interprime number because it is at equal distance from previous prime (1421520402229) and next prime (1421520402233).

It is not a de Polignac number, because 1421520402231 - 2¹ = 1421520402229 is a prime.

It is a super-2 number, since 2×1421520402231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421520402195 and 1421520402204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421520402233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47359536 + ... + 47389541.

It is an arithmetic number, because the mean of its divisors is an integer number (171211583946).

Almost surely, 2^{1421520402231} is an apocalyptic number.

1421520402231 is a deficient number, since it is larger than the sum of its proper divisors (633018605121).

1421520402231 is a wasteful number, since it uses less digits than its factorization.

1421520402231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94750750 (or 94750747 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 1421520402231 its reverse (1322040251241), we get a palindrome (2743560653472).

The spelling of 1421520402231 in words is "one trillion, four hundred twenty-one billion, five hundred twenty million, four hundred two thousand, two hundred thirty-one".