242045642 has 4 divisors (see below), whose sum is σ = 363068466. Its totient is φ = 121022820.

The previous prime is 242045623. The next prime is 242045653. The reversal of 242045642 is 246540242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 133656721 + 108388921 = 11561^2 + 10411^2 .

It is a super-2 number, since 2×242045642² = 117172185622384328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511409 + ... + 60511412.

Almost surely, 2^242045642 is an apocalyptic number.

242045642 is a deficient number, since it is larger than the sum of its proper divisors (121022824).

242045642 is a wasteful number, since it uses less digits than its factorization.

242045642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121022823.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 242045642 is about 15557.8161063820. The cubic root of 242045642 is about 623.2071431539.

Adding to 242045642 its reverse (246540242), we get a palindrome (488585884).

The spelling of 242045642 in words is "two hundred forty-two million, forty-five thousand, six hundred forty-two".