242621873 has 8 divisors (see below), whose sum is σ = 262180968. Its totient is φ = 223190784.

The previous prime is 242621861. The next prime is 242621891. The reversal of 242621873 is 378126242.

It can be written as a sum of positive squares in 4 ways, for example, as 8133904 + 234487969 = 2852^2 + 15313^2 .

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 242621873 - 2¹⁸ = 242359729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242621803) 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, 28040 + ... + 35657.

It is an arithmetic number, because the mean of its divisors is an integer number (32772621).

Almost surely, 2^242621873 is an apocalyptic number.

It is an amenable number.

242621873 is a deficient number, since it is larger than the sum of its proper divisors (19559095).

242621873 is a wasteful number, since it uses less digits than its factorization.

242621873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64003.

The product of its digits is 32256, while the sum is 35.

The square root of 242621873 is about 15576.3241170695. The cubic root of 242621873 is about 623.7013015743.

The spelling of 242621873 in words is "two hundred forty-two million, six hundred twenty-one thousand, eight hundred seventy-three".