146281274 has 4 divisors (see below), whose sum is σ = 219421914. Its totient is φ = 73140636.

The previous prime is 146281271. The next prime is 146281309. The reversal of 146281274 is 472182641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143832049 + 2449225 = 11993^2 + 1565^2 .

It is a super-2 number, since 2×146281274² = 42796422246126152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (146281271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36570317 + ... + 36570320.

Almost surely, 2^146281274 is an apocalyptic number.

146281274 is a deficient number, since it is larger than the sum of its proper divisors (73140640).

146281274 is an equidigital number, since it uses as much as digits as its factorization.

146281274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73140639.

The product of its digits is 21504, while the sum is 35.

The square root of 146281274 is about 12094.6795740937. The cubic root of 146281274 is about 526.9016735927.

The spelling of 146281274 in words is "one hundred forty-six million, two hundred eighty-one thousand, two hundred seventy-four".