145232123311421 has 8 divisors (see below), whose sum is σ = 152970228943200. Its totient is φ = 137503448646480.

The previous prime is 145232123311391. The next prime is 145232123311423. The reversal of 145232123311421 is 124113321232541.

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 145232123311421 - 2²⁶ = 145232056202557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145232123311423) 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, 2357710091 + ... + 2357771688.

It is an arithmetic number, because the mean of its divisors is an integer number (19121278617900).

Almost surely, 2^{145232123311421} is an apocalyptic number.

It is an amenable number.

145232123311421 is a deficient number, since it is larger than the sum of its proper divisors (7738105631779).

145232123311421 is a wasteful number, since it uses less digits than its factorization.

145232123311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4715483419.

The product of its digits is 34560, while the sum is 35.

Adding to 145232123311421 its reverse (124113321232541), we get a palindrome (269345444543962).

The spelling of 145232123311421 in words is "one hundred forty-five trillion, two hundred thirty-two billion, one hundred twenty-three million, three hundred eleven thousand, four hundred twenty-one".