74948129 has 2 divisors, whose sum is σ = 74948130. Its totient is φ = 74948128.

The previous prime is 74948119. The next prime is 74948147. The reversal of 74948129 is 92184947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52128400 + 22819729 = 7220^2 + 4777^2 .

It is an emirp because it is prime and its reverse (92184947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74948129 - 2¹⁶ = 74882593 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74948129.

It is not a weakly prime, because it can be changed into another prime (74948119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37474064 + 37474065.

It is an arithmetic number, because the mean of its divisors is an integer number (37474065).

Almost surely, 2^74948129 is an apocalyptic number.

It is an amenable number.

74948129 is a deficient number, since it is larger than the sum of its proper divisors (1).

74948129 is an equidigital number, since it uses as much as digits as its factorization.

74948129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 74948129 is about 8657.2587462776. The cubic root of 74948129 is about 421.6190886828.

The spelling of 74948129 in words is "seventy-four million, nine hundred forty-eight thousand, one hundred twenty-nine".