774143242 has 4 divisors (see below), whose sum is σ = 1161214866. Its totient is φ = 387071620.

The previous prime is 774143221. The next prime is 774143243. The reversal of 774143242 is 242341477.

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., 559842921 + 214300321 = 23661^2 + 14639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 774143198 and 774143207.

It is not an unprimeable number, because it can be changed into a prime (774143243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193535809 + ... + 193535812.

Almost surely, 2^774143242 is an apocalyptic number.

774143242 is a deficient number, since it is larger than the sum of its proper divisors (387071624).

774143242 is a wasteful number, since it uses less digits than its factorization.

774143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387071623.

The product of its digits is 37632, while the sum is 34.

The square root of 774143242 is about 27823.4297310738. The cubic root of 774143242 is about 918.2066680444.

It can be divided in two parts, 77414 and 3242, that added together give a square (80656 = 284²).

The spelling of 774143242 in words is "seven hundred seventy-four million, one hundred forty-three thousand, two hundred forty-two".