142143401 has 8 divisors (see below), whose sum is σ = 148103424. Its totient is φ = 136269360.

The previous prime is 142143377. The next prime is 142143431. The reversal of 142143401 is 104341241.

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

It is a cyclic number.

It is not a de Polignac number, because 142143401 - 2¹⁴ = 142127017 is a prime.

It is a super-3 number, since 3×142143401³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142143431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18110 + ... + 24743.

It is an arithmetic number, because the mean of its divisors is an integer number (18512928).

Almost surely, 2^142143401 is an apocalyptic number.

It is an amenable number.

142143401 is a deficient number, since it is larger than the sum of its proper divisors (5960023).

142143401 is a wasteful number, since it uses less digits than its factorization.

142143401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42991.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 142143401 is about 11922.3907417934. The cubic root of 142143401 is about 521.8859047574.

Adding to 142143401 its reverse (104341241), we get a palindrome (246484642).

The spelling of 142143401 in words is "one hundred forty-two million, one hundred forty-three thousand, four hundred one".