142193408 has 36 divisors (see below), whose sum is σ = 324382800. Its totient is φ = 60939264.

The previous prime is 142193407. The next prime is 142193449. The reversal of 142193408 is 804391241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (142193407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37883 + ... + 41466.

Almost surely, 2^142193408 is an apocalyptic number.

It is an amenable number.

142193408 is an abundant number, since it is smaller than the sum of its proper divisors (182189392).

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

142193408 is an frugal number, since it uses more digits than its factorization.

142193408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79372 (or 79358 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 142193408 is about 11924.4877458111. The cubic root of 142193408 is about 521.9470985668.

The spelling of 142193408 in words is "one hundred forty-two million, one hundred ninety-three thousand, four hundred eight".