1377421143 has 16 divisors (see below), whose sum is σ = 2100026880. Its totient is φ = 786685536.

The previous prime is 1377421099. The next prime is 1377421181. The reversal of 1377421143 is 3411247731.

It is not a de Polignac number, because 1377421143 - 2¹⁰ = 1377420119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377429143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26446 + ... + 58772.

It is an arithmetic number, because the mean of its divisors is an integer number (131251680).

Almost surely, 2^1377421143 is an apocalyptic number.

1377421143 is a deficient number, since it is larger than the sum of its proper divisors (722605737).

1377421143 is a wasteful number, since it uses less digits than its factorization.

1377421143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34366.

The product of its digits is 14112, while the sum is 33.

The square root of 1377421143 is about 37113.6247623430. The cubic root of 1377421143 is about 1112.6423381907.

Adding to 1377421143 its reverse (3411247731), we get a palindrome (4788668874).

The spelling of 1377421143 in words is "one billion, three hundred seventy-seven million, four hundred twenty-one thousand, one hundred forty-three".