154342140503 has 4 divisors (see below), whose sum is σ = 154580691600. Its totient is φ = 154103589408.

The previous prime is 154342140451. The next prime is 154342140551. The reversal of 154342140503 is 305041243451.

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

It is a cyclic number.

It is not a de Polignac number, because 154342140503 - 2¹⁸ = 154341878359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154342140503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154342140593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119274578 + ... + 119275871.

It is an arithmetic number, because the mean of its divisors is an integer number (38645172900).

Almost surely, 2^154342140503 is an apocalyptic number.

154342140503 is a deficient number, since it is larger than the sum of its proper divisors (238551097).

154342140503 is an equidigital number, since it uses as much as digits as its factorization.

154342140503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238551096.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 154342140503 its reverse (305041243451), we get a palindrome (459383383954).

The spelling of 154342140503 in words is "one hundred fifty-four billion, three hundred forty-two million, one hundred forty thousand, five hundred three".