249762122 has 4 divisors (see below), whose sum is σ = 374643186. Its totient is φ = 124881060.

The previous prime is 249762091. The next prime is 249762143. The reversal of 249762122 is 221267942.

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., 246772681 + 2989441 = 15709^2 + 1729^2 .

It is a super-2 number, since 2×249762122² = 124762235171885768, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 62440529 + ... + 62440532.

Almost surely, 2^249762122 is an apocalyptic number.

249762122 is a deficient number, since it is larger than the sum of its proper divisors (124881064).

249762122 is a wasteful number, since it uses less digits than its factorization.

249762122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124881063.

The product of its digits is 24192, while the sum is 35.

The square root of 249762122 is about 15803.8641477330. The cubic root of 249762122 is about 629.7606565420.

The spelling of 249762122 in words is "two hundred forty-nine million, seven hundred sixty-two thousand, one hundred twenty-two".