146422973 has 4 divisors (see below), whose sum is σ = 147791520. Its totient is φ = 145054428.

The previous prime is 146422961. The next prime is 146422981. The reversal of 146422973 is 379224641.

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, and also an emirpimes, since its reverse is a distinct semiprime: 379224641 = 3923 ⋅96667.

It is a cyclic number.

It is not a de Polignac number, because 146422973 - 2⁴ = 146422957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146422993) 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, 684113 + ... + 684326.

It is an arithmetic number, because the mean of its divisors is an integer number (36947880).

Almost surely, 2^146422973 is an apocalyptic number.

It is an amenable number.

146422973 is a deficient number, since it is larger than the sum of its proper divisors (1368547).

146422973 is a wasteful number, since it uses less digits than its factorization.

146422973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368546.

The product of its digits is 72576, while the sum is 38.

The square root of 146422973 is about 12100.5360625057. The cubic root of 146422973 is about 527.0717508319.

The spelling of 146422973 in words is "one hundred forty-six million, four hundred twenty-two thousand, nine hundred seventy-three".