1442406155 has 4 divisors (see below), whose sum is σ = 1730887392. Its totient is φ = 1153924920.

The previous prime is 1442406143. The next prime is 1442406167. The reversal of 1442406155 is 5516042441.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1442406143) and next prime (1442406167).

It is not a de Polignac number, because 1442406155 - 2⁴ = 1442406139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144240611 + ... + 144240620.

It is an arithmetic number, because the mean of its divisors is an integer number (432721848).

Almost surely, 2^1442406155 is an apocalyptic number.

1442406155 is a deficient number, since it is larger than the sum of its proper divisors (288481237).

1442406155 is an equidigital number, since it uses as much as digits as its factorization.

1442406155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288481236.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1442406155 is about 37979.0225650951. The cubic root of 1442406155 is about 1129.8718509230.

Adding to 1442406155 its reverse (5516042441), we get a palindrome (6958448596).

The spelling of 1442406155 in words is "one billion, four hundred forty-two million, four hundred six thousand, one hundred fifty-five".