145067206421 has 4 divisors (see below), whose sum is σ = 145079048352. Its totient is φ = 145055364492.

The previous prime is 145067206399. The next prime is 145067206477. The reversal of 145067206421 is 124602760541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145067206421 - 2¹⁸ = 145066944277 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 (145067206121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5902571 + ... + 5927096.

It is an arithmetic number, because the mean of its divisors is an integer number (36269762088).

Almost surely, 2^145067206421 is an apocalyptic number.

It is an amenable number.

145067206421 is a deficient number, since it is larger than the sum of its proper divisors (11841931).

145067206421 is a wasteful number, since it uses less digits than its factorization.

145067206421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11841930.

The product of its (nonzero) digits is 80640, while the sum is 38.

Adding to 145067206421 its reverse (124602760541), we get a palindrome (269669966962).

The spelling of 145067206421 in words is "one hundred forty-five billion, sixty-seven million, two hundred six thousand, four hundred twenty-one".