1423123413521 has 8 divisors (see below), whose sum is σ = 1454755179360. Its totient is φ = 1391797268928.

The previous prime is 1423123413431. The next prime is 1423123413571. The reversal of 1423123413521 is 1253143213241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1423123413521 - 2¹⁸ = 1423123151377 is a prime.

It is a super-2 number, since 2×1423123413521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423123413571) 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, 76395896 + ... + 76414521.

It is an arithmetic number, because the mean of its divisors is an integer number (181844397420).

Almost surely, 2^{1423123413521} is an apocalyptic number.

It is an amenable number.

1423123413521 is a deficient number, since it is larger than the sum of its proper divisors (31631765839).

1423123413521 is a wasteful number, since it uses less digits than its factorization.

1423123413521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152810623.

The product of its digits is 17280, while the sum is 32.

Adding to 1423123413521 its reverse (1253143213241), we get a palindrome (2676266626762).

The spelling of 1423123413521 in words is "one trillion, four hundred twenty-three billion, one hundred twenty-three million, four hundred thirteen thousand, five hundred twenty-one".