142066421 has 8 divisors (see below), whose sum is σ = 166750080. Its totient is φ = 118479888.

The previous prime is 142066417. The next prime is 142066427. The reversal of 142066421 is 124660241.

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 142066421 - 2² = 142066417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142066427) 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, 274001 + ... + 274518.

It is an arithmetic number, because the mean of its divisors is an integer number (20843760).

Almost surely, 2^142066421 is an apocalyptic number.

It is an amenable number.

142066421 is a deficient number, since it is larger than the sum of its proper divisors (24683659).

142066421 is an equidigital number, since it uses as much as digits as its factorization.

142066421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548563.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 142066421 is about 11919.1619252362. The cubic root of 142066421 is about 521.7916758982.

The spelling of 142066421 in words is "one hundred forty-two million, sixty-six thousand, four hundred twenty-one".