1429890143 has 8 divisors (see below), whose sum is σ = 1560746880. Its totient is φ = 1299177880.

The previous prime is 1429890139. The next prime is 1429890157. The reversal of 1429890143 is 3410989241.

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

It is not a de Polignac number, because 1429890143 - 2² = 1429890139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1429890143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429890173) 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 7 ways as a sum of consecutive naturals, for example, 14873 + ... + 55506.

It is an arithmetic number, because the mean of its divisors is an integer number (195093360).

Almost surely, 2^1429890143 is an apocalyptic number.

1429890143 is a deficient number, since it is larger than the sum of its proper divisors (130856737).

1429890143 is a wasteful number, since it uses less digits than its factorization.

1429890143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72237.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1429890143 is about 37813.8882290621. Note that the first 3 decimals coincide. The cubic root of 1429890143 is about 1126.5943203762.

The spelling of 1429890143 in words is "one billion, four hundred twenty-nine million, eight hundred ninety thousand, one hundred forty-three".