1642531511042 has 8 divisors (see below), whose sum is σ = 2472206131836. Its totient is φ = 818462800432.

The previous prime is 1642531511039. The next prime is 1642531511051. The reversal of 1642531511042 is 2401151352461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1448939430961 + 193592080081 = 1203719^2 + 439991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1642531510993 and 1642531511011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401476813 + ... + 1401477984.

Almost surely, 2^{1642531511042} is an apocalyptic number.

1642531511042 is a deficient number, since it is larger than the sum of its proper divisors (829674620794).

1642531511042 is a wasteful number, since it uses less digits than its factorization.

1642531511042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802955092.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 1642531511042 in words is "one trillion, six hundred forty-two billion, five hundred thirty-one million, five hundred eleven thousand, forty-two".