152738242 has 4 divisors (see below), whose sum is σ = 229107366. Its totient is φ = 76369120.

The previous prime is 152738233. The next prime is 152738291. The reversal of 152738242 is 242837251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242837251 = 569 ⋅426779.

It can be written as a sum of positive squares in only one way, i.e., 151019521 + 1718721 = 12289^2 + 1311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 152738198 and 152738207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38184559 + ... + 38184562.

Almost surely, 2^152738242 is an apocalyptic number.

152738242 is a deficient number, since it is larger than the sum of its proper divisors (76369124).

152738242 is an equidigital number, since it uses as much as digits as its factorization.

152738242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76369123.

The product of its digits is 26880, while the sum is 34.

The square root of 152738242 is about 12358.7314073897. The cubic root of 152738242 is about 534.5429374339.

Subtracting 152738242 from its reverse (242837251), we obtain a palindrome (90099009).

The spelling of 152738242 in words is "one hundred fifty-two million, seven hundred thirty-eight thousand, two hundred forty-two".