142062021 has 6 divisors (see below), whose sum is σ = 205200710. Its totient is φ = 94708008.

The previous prime is 142062017. The next prime is 142062049. The reversal of 142062021 is 120260241.

142062021 is a `hidden beast` number, since 1 + 4 + 20 + 620 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 132365025 + 9696996 = 11505^2 + 3114^2 .

It is not a de Polignac number, because 142062021 - 2² = 142062017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142061985 and 142062003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142062061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7892326 + ... + 7892343.

Almost surely, 2^142062021 is an apocalyptic number.

It is an amenable number.

142062021 is a deficient number, since it is larger than the sum of its proper divisors (63138689).

142062021 is a wasteful number, since it uses less digits than its factorization.

142062021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15784675 (or 15784672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 142062021 is about 11918.9773470714. The cubic root of 142062021 is about 521.7862889647.

The spelling of 142062021 in words is "one hundred forty-two million, sixty-two thousand, twenty-one".