248249642 has 4 divisors (see below), whose sum is σ = 372374466. Its totient is φ = 124124820.

The previous prime is 248249641. The next prime is 248249681. The reversal of 248249642 is 246942842.

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., 237745561 + 10504081 = 15419^2 + 3241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 248249642.

It is not an unprimeable number, because it can be changed into a prime (248249641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62062409 + ... + 62062412.

Almost surely, 2^248249642 is an apocalyptic number.

248249642 is a deficient number, since it is larger than the sum of its proper divisors (124124824).

248249642 is a wasteful number, since it uses less digits than its factorization.

248249642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124124823.

The product of its digits is 221184, while the sum is 41.

The square root of 248249642 is about 15755.9398957980. The cubic root of 248249642 is about 628.4868717574.

The spelling of 248249642 in words is "two hundred forty-eight million, two hundred forty-nine thousand, six hundred forty-two".