154232542 has 4 divisors (see below), whose sum is σ = 231348816. Its totient is φ = 77116270.

The previous prime is 154232537. The next prime is 154232579. The reversal of 154232542 is 245232451.

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

It is a self number, because there is not a number n which added to its sum of digits gives 154232542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38558134 + ... + 38558137.

It is an arithmetic number, because the mean of its divisors is an integer number (57837204).

Almost surely, 2^154232542 is an apocalyptic number.

154232542 is a deficient number, since it is larger than the sum of its proper divisors (77116274).

154232542 is an equidigital number, since it uses as much as digits as its factorization.

154232542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77116273.

The product of its digits is 9600, while the sum is 28.

The square root of 154232542 is about 12419.0394958708. The cubic root of 154232542 is about 536.2804998564.

Adding to 154232542 its reverse (245232451), we get a palindrome (399464993).

Subtracting 154232542 from its reverse (245232451), we obtain a palindrome (90999909).

The spelling of 154232542 in words is "one hundred fifty-four million, two hundred thirty-two thousand, five hundred forty-two".