142155601 has 8 divisors (see below), whose sum is σ = 164689664. Its totient is φ = 120178080.

The previous prime is 142155583. The next prime is 142155613. The reversal of 142155601 is 106551241.

It is a happy number.

142155601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142155601 - 2¹³ = 142147409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142155631) 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, 138585 + ... + 139606.

It is an arithmetic number, because the mean of its divisors is an integer number (20586208).

Almost surely, 2^142155601 is an apocalyptic number.

It is an amenable number.

142155601 is a deficient number, since it is larger than the sum of its proper divisors (22534063).

142155601 is an equidigital number, since it uses as much as digits as its factorization.

142155601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278271.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 142155601 is about 11922.9023731640. The cubic root of 142155601 is about 521.9008352802.

The spelling of 142155601 in words is "one hundred forty-two million, one hundred fifty-five thousand, six hundred one".