142678741 has 4 divisors (see below), whose sum is σ = 142746400. Its totient is φ = 142611084.

The previous prime is 142678721. The next prime is 142678747. The reversal of 142678741 is 147876241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 147876241 = 47 ⋅3146303.

It is a cyclic number.

It is not a de Polignac number, because 142678741 - 2¹¹ = 142676693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142678694 and 142678703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142678747) 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, 30561 + ... + 34918.

It is an arithmetic number, because the mean of its divisors is an integer number (35686600).

Almost surely, 2^142678741 is an apocalyptic number.

It is an amenable number.

142678741 is a deficient number, since it is larger than the sum of its proper divisors (67659).

142678741 is an equidigital number, since it uses as much as digits as its factorization.

142678741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67658.

The product of its digits is 75264, while the sum is 40.

The square root of 142678741 is about 11944.8206767620. The cubic root of 142678741 is about 522.5402589493.

The spelling of 142678741 in words is "one hundred forty-two million, six hundred seventy-eight thousand, seven hundred forty-one".