1605470142106 has 4 divisors (see below), whose sum is σ = 2408205213162. Its totient is φ = 802735071052.

The previous prime is 1605470142083. The next prime is 1605470142131. The reversal of 1605470142106 is 6012410745061.

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., 1215526095081 + 389944047025 = 1102509^2 + 624455^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401367535525 + ... + 401367535528.

Almost surely, 2^{1605470142106} is an apocalyptic number.

1605470142106 is a deficient number, since it is larger than the sum of its proper divisors (802735071056).

1605470142106 is an equidigital number, since it uses as much as digits as its factorization.

1605470142106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802735071055.

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 1605470142106 its reverse (6012410745061), we get a palindrome (7617880887167).

The spelling of 1605470142106 in words is "one trillion, six hundred five billion, four hundred seventy million, one hundred forty-two thousand, one hundred six".