243290742 has 16 divisors (see below), whose sum is σ = 487890480. Its totient is φ = 80878752.

The previous prime is 243290737. The next prime is 243290743. The reversal of 243290742 is 247092342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243290743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52117 + ... + 56592.

It is an arithmetic number, because the mean of its divisors is an integer number (30493155).

Almost surely, 2^243290742 is an apocalyptic number.

243290742 is an abundant number, since it is smaller than the sum of its proper divisors (244599738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243290742 is a wasteful number, since it uses less digits than its factorization.

243290742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109087.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 243290742 is about 15597.7800343510. The cubic root of 243290742 is about 624.2739233336.

The spelling of 243290742 in words is "two hundred forty-three million, two hundred ninety thousand, seven hundred forty-two".