142121002 has 8 divisors (see below), whose sum is σ = 222450336. Its totient is φ = 67970892.

The previous prime is 142120991. The next prime is 142121009. The reversal of 142121002 is 200121241.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (142121009) 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, 1544748 + ... + 1544839.

It is an arithmetic number, because the mean of its divisors is an integer number (27806292).

Almost surely, 2^142121002 is an apocalyptic number.

142121002 is a deficient number, since it is larger than the sum of its proper divisors (80329334).

142121002 is a wasteful number, since it uses less digits than its factorization.

142121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089612.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 142121002 is about 11921.4513378196. The cubic root of 142121002 is about 521.8584903379.

Adding to 142121002 its reverse (200121241), we get a palindrome (342242243).

The spelling of 142121002 in words is "one hundred forty-two million, one hundred twenty-one thousand, two".