142121003 has 8 divisors (see below), whose sum is σ = 152728272. Its totient is φ = 131763456.

The previous prime is 142120991. The next prime is 142121009. The reversal of 142121003 is 300121241.

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 142121003 - 2⁴ = 142120987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142121009) 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, 61250 + ... + 63527.

It is an arithmetic number, because the mean of its divisors is an integer number (19091034).

Almost surely, 2^142121003 is an apocalyptic number.

142121003 is a deficient number, since it is larger than the sum of its proper divisors (10607269).

142121003 is a wasteful number, since it uses less digits than its factorization.

142121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124861.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 142121003 is about 11921.4513797608. The cubic root of 142121003 is about 521.8584915619.

Adding to 142121003 its reverse (300121241), we get a palindrome (442242244).

The spelling of 142121003 in words is "one hundred forty-two million, one hundred twenty-one thousand, three".