142751401 has 4 divisors (see below), whose sum is σ = 153732292. Its totient is φ = 131770512.

The previous prime is 142751383. The next prime is 142751449. The reversal of 142751401 is 104157241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32501401 + 110250000 = 5701^2 + 10500^2 .

It is a cyclic number.

It is not a de Polignac number, because 142751401 - 2¹⁷ = 142620329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142751201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5490426 + ... + 5490451.

It is an arithmetic number, because the mean of its divisors is an integer number (38433073).

Almost surely, 2^142751401 is an apocalyptic number.

It is an amenable number.

142751401 is a deficient number, since it is larger than the sum of its proper divisors (10980891).

142751401 is a wasteful number, since it uses less digits than its factorization.

142751401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10980890.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 142751401 is about 11947.8617752299. The cubic root of 142751401 is about 522.6289461442.

The spelling of 142751401 in words is "one hundred forty-two million, seven hundred fifty-one thousand, four hundred one".