142420903 has 4 divisors (see below), whose sum is σ = 149916760. Its totient is φ = 134925048.

The previous prime is 142420877. The next prime is 142420907. The reversal of 142420903 is 309024241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142420903 - 2⁵ = 142420871 is a prime.

It is a super-2 number, since 2×142420903² = 40567427222670818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142420907) 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, 3747900 + ... + 3747937.

It is an arithmetic number, because the mean of its divisors is an integer number (37479190).

Almost surely, 2^142420903 is an apocalyptic number.

142420903 is a deficient number, since it is larger than the sum of its proper divisors (7495857).

142420903 is an equidigital number, since it uses as much as digits as its factorization.

142420903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495856.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 142420903 is about 11934.0229176921. The cubic root of 142420903 is about 522.2253043545.

The spelling of 142420903 in words is "one hundred forty-two million, four hundred twenty thousand, nine hundred three".