7402145 has 4 divisors (see below), whose sum is σ = 8882580. Its totient is φ = 5921712.

The previous prime is 7402103. The next prime is 7402147. The reversal of 7402145 is 5412047.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1056784 + 6345361 = 1028^2 + 2519^2 .

It is a cyclic number.

It is not a de Polignac number, because 7402145 - 2¹⁴ = 7385761 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7402145.

It is not an unprimeable number, because it can be changed into a prime (7402147) 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, 740210 + ... + 740219.

It is an arithmetic number, because the mean of its divisors is an integer number (2220645).

Almost surely, 2^7402145 is an apocalyptic number.

It is an amenable number.

7402145 is a deficient number, since it is larger than the sum of its proper divisors (1480435).

7402145 is a wasteful number, since it uses less digits than its factorization.

7402145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480434.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 7402145 is about 2720.6883320219. The cubic root of 7402145 is about 194.8883428272. Note that the first 3 decimals are identical.

The spelling of 7402145 in words is "seven million, four hundred two thousand, one hundred forty-five".