7146139 has 32 divisors (see below), whose sum is σ = 9838080. Its totient is φ = 5052960.

The previous prime is 7146133. The next prime is 7146157. The reversal of 7146139 is 9316417.

It is a happy number.

It is not a de Polignac number, because 7146139 - 2¹³ = 7137947 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

7146139 is a lucky number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 7146139.

It is not an unprimeable number, because it can be changed into a prime (7146133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121092 + ... + 121150.

It is an arithmetic number, because the mean of its divisors is an integer number (307440).

Almost surely, 2^7146139 is an apocalyptic number.

7146139 is a deficient number, since it is larger than the sum of its proper divisors (2691941).

7146139 is a wasteful number, since it uses less digits than its factorization.

7146139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 90 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 7146139 is about 2673.2263278668. The cubic root of 7146139 is about 192.6151691779.

The spelling of 7146139 in words is "seven million, one hundred forty-six thousand, one hundred thirty-nine".