142457901 has 4 divisors (see below), whose sum is σ = 189943872. Its totient is φ = 94971932.

The previous prime is 142457891. The next prime is 142457911. The reversal of 142457901 is 109754241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (142457891) and next prime (142457911).

It is a cyclic number.

It is not a de Polignac number, because 142457901 - 2⁵ = 142457869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142457911) 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, 23742981 + ... + 23742986.

It is an arithmetic number, because the mean of its divisors is an integer number (47485968).

Almost surely, 2^142457901 is an apocalyptic number.

It is an amenable number.

142457901 is a deficient number, since it is larger than the sum of its proper divisors (47485971).

142457901 is an equidigital number, since it uses as much as digits as its factorization.

142457901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47485970.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 142457901 is about 11935.5729229895. The cubic root of 142457901 is about 522.2705215442.

The spelling of 142457901 in words is "one hundred forty-two million, four hundred fifty-seven thousand, nine hundred one".