142471501 has 2 divisors, whose sum is σ = 142471502. Its totient is φ = 142471500.

The previous prime is 142471493. The next prime is 142471507. The reversal of 142471501 is 105174241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106110601 + 36360900 = 10301^2 + 6030^2 .

It is an emirp because it is prime and its reverse (105174241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142471501 - 2³ = 142471493 is a prime.

It is a super-3 number, since 3×142471501³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142471507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71235750 + 71235751.

It is an arithmetic number, because the mean of its divisors is an integer number (71235751).

Almost surely, 2^142471501 is an apocalyptic number.

It is an amenable number.

142471501 is a deficient number, since it is larger than the sum of its proper divisors (1).

142471501 is an equidigital number, since it uses as much as digits as its factorization.

142471501 is an evil number, because the sum of its binary digits is even.

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

The square root of 142471501 is about 11936.1426348716. The cubic root of 142471501 is about 522.2871408472.

The spelling of 142471501 in words is "one hundred forty-two million, four hundred seventy-one thousand, five hundred one".