7121493 has 8 divisors (see below), whose sum is σ = 10550400. Its totient is φ = 4747644.

The previous prime is 7121489. The next prime is 7121503. The reversal of 7121493 is 3941217.

It is not a de Polignac number, because 7121493 - 2² = 7121489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 263759 = 7121493 / (7 + 1 + 2 + 1 + 4 + 9 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131853 + ... + 131906.

It is an arithmetic number, because the mean of its divisors is an integer number (1318800).

Almost surely, 2^7121493 is an apocalyptic number.

It is an amenable number.

7121493 is a deficient number, since it is larger than the sum of its proper divisors (3428907).

7121493 is a wasteful number, since it uses less digits than its factorization.

7121493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263768 (or 263762 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 7121493 is about 2668.6125608638. The cubic root of 7121493 is about 192.3934801697.

The spelling of 7121493 in words is "seven million, one hundred twenty-one thousand, four hundred ninety-three".