247473442 has 12 divisors (see below), whose sum is σ = 391776966. Its totient is φ = 117223920.

The previous prime is 247473409. The next prime is 247473449. The reversal of 247473442 is 244374742.

It can be written as a sum of positive squares in only one way, i.e., 224730081 + 22743361 = 14991^2 + 4769^2 .

It is a super-2 number, since 2×247473442² = 122486208990654728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247473449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170659 + ... + 172102.

Almost surely, 2^247473442 is an apocalyptic number.

247473442 is a deficient number, since it is larger than the sum of its proper divisors (144303524).

247473442 is a wasteful number, since it uses less digits than its factorization.

247473442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342801 (or 342782 counting only the distinct ones).

The product of its digits is 150528, while the sum is 37.

The square root of 247473442 is about 15731.2886312597. The cubic root of 247473442 is about 627.8311597306.

The spelling of 247473442 in words is "two hundred forty-seven million, four hundred seventy-three thousand, four hundred forty-two".