153445103242 has 4 divisors (see below), whose sum is σ = 230167654866. Its totient is φ = 76722551620.

The previous prime is 153445103219. The next prime is 153445103243. The reversal of 153445103242 is 242301544351.

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., 116635227361 + 36809875881 = 341519^2 + 191859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 153445103198 and 153445103207.

It is not an unprimeable number, because it can be changed into a prime (153445103243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38361275809 + ... + 38361275812.

Almost surely, 2^153445103242 is an apocalyptic number.

153445103242 is a deficient number, since it is larger than the sum of its proper divisors (76722551624).

153445103242 is an equidigital number, since it uses as much as digits as its factorization.

153445103242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76722551623.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 153445103242 its reverse (242301544351), we get a palindrome (395746647593).

The spelling of 153445103242 in words is "one hundred fifty-three billion, four hundred forty-five million, one hundred three thousand, two hundred forty-two".