242401531 has 8 divisors (see below), whose sum is σ = 253109664. Its totient is φ = 231707520.

The previous prime is 242401529. The next prime is 242401547. The reversal of 242401531 is 135104242.

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

It is not a de Polignac number, because 242401531 - 2¹ = 242401529 is a prime.

It is a super-2 number, since 2×242401531² = 117517004462287922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242401501) 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, 47265 + ... + 52141.

It is an arithmetic number, because the mean of its divisors is an integer number (31638708).

Almost surely, 2^242401531 is an apocalyptic number.

242401531 is a deficient number, since it is larger than the sum of its proper divisors (10708133).

242401531 is a wasteful number, since it uses less digits than its factorization.

242401531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7061.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 242401531 is about 15569.2495323314. The cubic root of 242401531 is about 623.5124353713.

Adding to 242401531 its reverse (135104242), we get a palindrome (377505773).

The spelling of 242401531 in words is "two hundred forty-two million, four hundred one thousand, five hundred thirty-one".