7121154 has 16 divisors (see below), whose sum is σ = 14271840. Its totient is φ = 2368800.

The previous prime is 7121141. The next prime is 7121161. The reversal of 7121154 is 4511217.

It is a happy number.

It is an Ulam number.

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 7121154.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3054 + ... + 4854.

It is an arithmetic number, because the mean of its divisors is an integer number (891990).

Almost surely, 2^7121154 is an apocalyptic number.

7121154 is an abundant number, since it is smaller than the sum of its proper divisors (7150686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7121154 is a wasteful number, since it uses less digits than its factorization.

7121154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465.

The product of its digits is 280, while the sum is 21.

The square root of 7121154 is about 2668.5490439563. The cubic root of 7121154 is about 192.3904273256.

The spelling of 7121154 in words is "seven million, one hundred twenty-one thousand, one hundred fifty-four".