142857420 has 24 divisors (see below), whose sum is σ = 400000944. Its totient is φ = 38095296.

The previous prime is 142857413. The next prime is 142857427. The reversal of 142857420 is 24758241.

It is an interprime number because it is at equal distance from previous prime (142857413) and next prime (142857427).

It is not an unprimeable number, because it can be changed into a prime (142857427) 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, 1190419 + ... + 1190538.

It is an arithmetic number, because the mean of its divisors is an integer number (16666706).

Almost surely, 2^142857420 is an apocalyptic number.

142857420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142857420 is an abundant number, since it is smaller than the sum of its proper divisors (257143524).

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

142857420 is a wasteful number, since it uses less digits than its factorization.

142857420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380969 (or 2380967 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 142857420 is about 11952.2976870558. The cubic root of 142857420 is about 522.7582966246.

The spelling of 142857420 in words is "one hundred forty-two million, eight hundred fifty-seven thousand, four hundred twenty".