242154138 has 32 divisors (see below), whose sum is σ = 495533376. Its totient is φ = 78860288.

The previous prime is 242154119. The next prime is 242154151. The reversal of 242154138 is 831451242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80245 + ... + 83207.

It is an arithmetic number, because the mean of its divisors is an integer number (15485418).

Almost surely, 2^242154138 is an apocalyptic number.

242154138 is an abundant number, since it is smaller than the sum of its proper divisors (253379238).

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

242154138 is a wasteful number, since it uses less digits than its factorization.

242154138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278.

The product of its digits is 7680, while the sum is 30.

The square root of 242154138 is about 15561.3025804397. The cubic root of 242154138 is about 623.3002459552.

The spelling of 242154138 in words is "two hundred forty-two million, one hundred fifty-four thousand, one hundred thirty-eight".