1520242506431 has 8 divisors (see below), whose sum is σ = 1662028333824. Its totient is φ = 1379053672920.

The previous prime is 1520242506407. The next prime is 1520242506467. The reversal of 1520242506431 is 1346052420251.

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

It is a de Polignac number, because none of the positive numbers 2^k-1520242506431 is a prime.

It is a super-2 number, since 2×1520242506431² (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 = 1520242506391 and 1520242506400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520242502431) 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, 149243141 + ... + 149253326.

It is an arithmetic number, because the mean of its divisors is an integer number (207753541728).

Almost surely, 2^{1520242506431} is an apocalyptic number.

1520242506431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1520242506431 is a deficient number, since it is larger than the sum of its proper divisors (141785827393).

1520242506431 is a wasteful number, since it uses less digits than its factorization.

1520242506431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298496941.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 1520242506431 its reverse (1346052420251), we get a palindrome (2866294926682).

The spelling of 1520242506431 in words is "one trillion, five hundred twenty billion, two hundred forty-two million, five hundred six thousand, four hundred thirty-one".