274146021 has 12 divisors (see below), whose sum is σ = 398512972. Its totient is φ = 181598976.

The previous prime is 274146013. The next prime is 274146053. The reversal of 274146021 is 120641472.

It can be written as a sum of positive squares in 2 ways, for example, as 191517921 + 82628100 = 13839^2 + 9090^2 .

It is not a de Polignac number, because 274146021 - 2³ = 274146013 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 (274146121) 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 11 ways as a sum of consecutive naturals, for example, 95596 + ... + 98421.

Almost surely, 2^274146021 is an apocalyptic number.

It is an amenable number.

274146021 is a deficient number, since it is larger than the sum of its proper divisors (124366951).

274146021 is a wasteful number, since it uses less digits than its factorization.

274146021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194180 (or 194177 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 274146021 is about 16557.3554953682. The cubic root of 274146021 is about 649.6218873879.

Adding to 274146021 its reverse (120641472), we get a palindrome (394787493).

The spelling of 274146021 in words is "two hundred seventy-four million, one hundred forty-six thousand, twenty-one".