1445142477 has 24 divisors (see below), whose sum is σ = 2050101792. Its totient is φ = 905324800.

The previous prime is 1445142473. The next prime is 1445142487. The reversal of 1445142477 is 7742415441.

It is a happy number.

It is not a de Polignac number, because 1445142477 - 2² = 1445142473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445142473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 919102 + ... + 920672.

It is an arithmetic number, because the mean of its divisors is an integer number (85420908).

Almost surely, 2^1445142477 is an apocalyptic number.

1445142477 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1445142477 is a deficient number, since it is larger than the sum of its proper divisors (604959315).

1445142477 is a wasteful number, since it uses less digits than its factorization.

1445142477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2652 counting only the distinct ones).

The product of its digits is 125440, while the sum is 39.

The square root of 1445142477 is about 38015.0296198753. The cubic root of 1445142477 is about 1130.5858754748.

The spelling of 1445142477 in words is "one billion, four hundred forty-five million, one hundred forty-two thousand, four hundred seventy-seven".