261027242 has 8 divisors (see below), whose sum is σ = 447475296. Its totient is φ = 111868812.

The previous prime is 261027241. The next prime is 261027251. The reversal of 261027242 is 242720162.

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

It is a super-2 number, since 2×261027242² = 136270442132253128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261027241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9322388 + ... + 9322415.

It is an arithmetic number, because the mean of its divisors is an integer number (55934412).

Almost surely, 2^261027242 is an apocalyptic number.

261027242 is a deficient number, since it is larger than the sum of its proper divisors (186448054).

261027242 is a wasteful number, since it uses less digits than its factorization.

261027242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18644812.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 261027242 is about 16156.3375181382. The cubic root of 261027242 is about 639.0898863972.

The spelling of 261027242 in words is "two hundred sixty-one million, twenty-seven thousand, two hundred forty-two".