142005404 has 12 divisors (see below), whose sum is σ = 259314384. Its totient is φ = 67915584.

The previous prime is 142005349. The next prime is 142005407. The reversal of 142005404 is 404500241.

142005404 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142005407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771677 + ... + 771860.

It is an arithmetic number, because the mean of its divisors is an integer number (21609532).

Almost surely, 2^142005404 is an apocalyptic number.

It is an amenable number.

142005404 is a deficient number, since it is larger than the sum of its proper divisors (117308980).

142005404 is a wasteful number, since it uses less digits than its factorization.

142005404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543564 (or 1543562 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 142005404 is about 11916.6020324587. The cubic root of 142005404 is about 521.7169626721.

Adding to 142005404 its reverse (404500241), we get a palindrome (546505645).

The spelling of 142005404 in words is "one hundred forty-two million, five thousand, four hundred four".