242391477 has 8 divisors (see below), whose sum is σ = 331923616. Its totient is φ = 157226832.

The previous prime is 242391469. The next prime is 242391509. The reversal of 242391477 is 774193242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242391477 - 2³ = 242391469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242391277) 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, 1091743 + ... + 1091964.

It is an arithmetic number, because the mean of its divisors is an integer number (41490452).

Almost surely, 2^242391477 is an apocalyptic number.

It is an amenable number.

242391477 is a deficient number, since it is larger than the sum of its proper divisors (89532139).

242391477 is a wasteful number, since it uses less digits than its factorization.

242391477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183747.

The product of its digits is 84672, while the sum is 39.

The square root of 242391477 is about 15568.9266489376. The cubic root of 242391477 is about 623.5038148528.

The spelling of 242391477 in words is "two hundred forty-two million, three hundred ninety-one thousand, four hundred seventy-seven".