264403610354242 has 4 divisors (see below), whose sum is σ = 396605415531366. Its totient is φ = 132201805177120.

The previous prime is 264403610354203. The next prime is 264403610354249. The reversal of 264403610354242 is 242453016304462.

It is a happy number.

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., 260272753286841 + 4130857067401 = 16132971^2 + 2032451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 264403610354192 and 264403610354201.

It is not an unprimeable number, because it can be changed into a prime (264403610354249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66100902588559 + ... + 66100902588562.

Almost surely, 2^{264403610354242} is an apocalyptic number.

264403610354242 is a deficient number, since it is larger than the sum of its proper divisors (132201805177124).

264403610354242 is a wasteful number, since it uses less digits than its factorization.

264403610354242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132201805177123.

The product of its (nonzero) digits is 3317760, while the sum is 46.

The spelling of 264403610354242 in words is "two hundred sixty-four trillion, four hundred three billion, six hundred ten million, three hundred fifty-four thousand, two hundred forty-two".