142186901 has 2 divisors, whose sum is σ = 142186902. Its totient is φ = 142186900.

The previous prime is 142186879. The next prime is 142186907. The reversal of 142186901 is 109681241.

142186901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99480676 + 42706225 = 9974^2 + 6535^2 .

It is a cyclic number.

It is not a de Polignac number, because 142186901 - 2¹⁰ = 142185877 is a prime.

It is a super-2 number, since 2×142186901² = 40434229631967602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142186907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71093450 + 71093451.

It is an arithmetic number, because the mean of its divisors is an integer number (71093451).

Almost surely, 2^142186901 is an apocalyptic number.

It is an amenable number.

142186901 is a deficient number, since it is larger than the sum of its proper divisors (1).

142186901 is an equidigital number, since it uses as much as digits as its factorization.

142186901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 142186901 is about 11924.2149007807. The cubic root of 142186901 is about 521.9391367312.

The spelling of 142186901 in words is "one hundred forty-two million, one hundred eighty-six thousand, nine hundred one".