1802428121 has 8 divisors (see below), whose sum is σ = 1943928000. Its totient is φ = 1661335632.

The previous prime is 1802428109. The next prime is 1802428127. The reversal of 1802428121 is 1218242081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1802428121 - 2¹⁰ = 1802427097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1802428127) 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, 92621 + ... + 110378.

It is an arithmetic number, because the mean of its divisors is an integer number (242991000).

Almost surely, 2^1802428121 is an apocalyptic number.

It is an amenable number.

1802428121 is a deficient number, since it is larger than the sum of its proper divisors (141499879).

1802428121 is a wasteful number, since it uses less digits than its factorization.

1802428121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203695.

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 1802428121 is about 42455.0129077828. The cubic root of 1802428121 is about 1216.9871282538.

The spelling of 1802428121 in words is "one billion, eight hundred two million, four hundred twenty-eight thousand, one hundred twenty-one".