2405404151242 has 4 divisors (see below), whose sum is σ = 3608106226866. Its totient is φ = 1202702075620.

The previous prime is 2405404151231. The next prime is 2405404151251. The reversal of 2405404151242 is 2421514045042.

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., 1490399030761 + 915005120481 = 1220819^2 + 956559^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2405404151198 and 2405404151207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601351037809 + ... + 601351037812.

Almost surely, 2^{2405404151242} is an apocalyptic number.

2405404151242 is a deficient number, since it is larger than the sum of its proper divisors (1202702075624).

2405404151242 is a wasteful number, since it uses less digits than its factorization.

2405404151242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202702075623.

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 2405404151242 its reverse (2421514045042), we get a palindrome (4826918196284).

The spelling of 2405404151242 in words is "two trillion, four hundred five billion, four hundred four million, one hundred fifty-one thousand, two hundred forty-two".