146734021 has 16 divisors (see below), whose sum is σ = 177914880. Its totient is φ = 118137600.

The previous prime is 146734013. The next prime is 146734057. The reversal of 146734021 is 120437641.

It is not a de Polignac number, because 146734021 - 2³ = 146734013 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 (146734001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82540 + ... + 84298.

It is an arithmetic number, because the mean of its divisors is an integer number (11119680).

Almost surely, 2^146734021 is an apocalyptic number.

It is an amenable number.

146734021 is a deficient number, since it is larger than the sum of its proper divisors (31180859).

146734021 is a wasteful number, since it uses less digits than its factorization.

146734021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 146734021 is about 12113.3818977196. The cubic root of 146734021 is about 527.4447083845. Note that the first 3 decimals are identical.

The spelling of 146734021 in words is "one hundred forty-six million, seven hundred thirty-four thousand, twenty-one".