146972451 has 8 divisors (see below), whose sum is σ = 197866240. Its totient is φ = 97030152.

The previous prime is 146972447. The next prime is 146972459. The reversal of 146972451 is 154279641.

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

It is not a de Polignac number, because 146972451 - 2² = 146972447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146972459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237511 + ... + 238128.

It is an arithmetic number, because the mean of its divisors is an integer number (24733280).

Almost surely, 2^146972451 is an apocalyptic number.

146972451 is a deficient number, since it is larger than the sum of its proper divisors (50893789).

146972451 is a wasteful number, since it uses less digits than its factorization.

146972451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475745.

The product of its digits is 60480, while the sum is 39.

The square root of 146972451 is about 12123.2194981366. The cubic root of 146972451 is about 527.7302376861.

It can be divided in two parts, 1469 and 72451, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 146972451 in words is "one hundred forty-six million, nine hundred seventy-two thousand, four hundred fifty-one".