284742442 has 4 divisors (see below), whose sum is σ = 427113666. Its totient is φ = 142371220.

The previous prime is 284742407. The next prime is 284742457. The reversal of 284742442 is 244247482.

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., 211964481 + 72777961 = 14559^2 + 8531^2 .

It is a super-2 number, since 2×284742442² = 162156516552246728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71185609 + ... + 71185612.

Almost surely, 2^284742442 is an apocalyptic number.

284742442 is a deficient number, since it is larger than the sum of its proper divisors (142371224).

284742442 is a wasteful number, since it uses less digits than its factorization.

284742442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142371223.

The product of its digits is 114688, while the sum is 37.

The square root of 284742442 is about 16874.3130823154. The cubic root of 284742442 is about 657.8861371146.

The spelling of 284742442 in words is "two hundred eighty-four million, seven hundred forty-two thousand, four hundred forty-two".