405143142 has 16 divisors (see below), whose sum is σ = 810617520. Its totient is φ = 134992512.

The previous prime is 405143107. The next prime is 405143159. The reversal of 405143142 is 241341504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3834 + ... + 28722.

It is an arithmetic number, because the mean of its divisors is an integer number (50663595).

Almost surely, 2^405143142 is an apocalyptic number.

405143142 is an abundant number, since it is smaller than the sum of its proper divisors (405474378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405143142 is a wasteful number, since it uses less digits than its factorization.

405143142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27607.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 405143142 is about 20128.1678748961. The cubic root of 405143142 is about 739.9507771009.

Adding to 405143142 its reverse (241341504), we get a palindrome (646484646).

The spelling of 405143142 in words is "four hundred five million, one hundred forty-three thousand, one hundred forty-two".