242787919 has 8 divisors (see below), whose sum is σ = 265627008. Its totient is φ = 220076760.

The previous prime is 242787899. The next prime is 242787949. The reversal of 242787919 is 919787242.

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

It is a cyclic number.

It is not a de Polignac number, because 242787919 - 2⁵ = 242787887 is a prime.

It is a super-2 number, since 2×242787919² = 117891947224701122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242787949) 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, 27987 + ... + 35620.

It is an arithmetic number, because the mean of its divisors is an integer number (33203376).

Almost surely, 2^242787919 is an apocalyptic number.

242787919 is a deficient number, since it is larger than the sum of its proper divisors (22839089).

242787919 is a wasteful number, since it uses less digits than its factorization.

242787919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63965.

The product of its digits is 508032, while the sum is 49.

The square root of 242787919 is about 15581.6532819852. The cubic root of 242787919 is about 623.8435524061.

The spelling of 242787919 in words is "two hundred forty-two million, seven hundred eighty-seven thousand, nine hundred nineteen".