242640030 has 16 divisors (see below), whose sum is σ = 582336144. Its totient is φ = 64704000.

The previous prime is 242640019. The next prime is 242640059. The reversal of 242640030 is 30046242.

It is a junction number, because it is equal to n+sod(n) for n = 242639979 and 242640006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4043971 + ... + 4044030.

It is an arithmetic number, because the mean of its divisors is an integer number (36396009).

Almost surely, 2^242640030 is an apocalyptic number.

242640030 is an abundant number, since it is smaller than the sum of its proper divisors (339696114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242640030 is a wasteful number, since it uses less digits than its factorization.

242640030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8088011.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 242640030 is about 15576.9069458606. The cubic root of 242640030 is about 623.7168597512.

Adding to 242640030 its reverse (30046242), we get a palindrome (272686272).

The spelling of 242640030 in words is "two hundred forty-two million, six hundred forty thousand, thirty".