7450139 has 2 divisors, whose sum is σ = 7450140. Its totient is φ = 7450138.

The previous prime is 7450127. The next prime is 7450169. The reversal of 7450139 is 9310547.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7450139 - 2⁴ = 7450123 is a prime.

It is a super-2 number, since 2×7450139² = 111009142238642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7450169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3725069 + 3725070.

It is an arithmetic number, because the mean of its divisors is an integer number (3725070).

Almost surely, 2^7450139 is an apocalyptic number.

7450139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7450139 is an equidigital number, since it uses as much as digits as its factorization.

7450139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 7450139 is about 2729.4942755023. The cubic root of 7450139 is about 195.3086411910.

The spelling of 7450139 in words is "seven million, four hundred fifty thousand, one hundred thirty-nine".