3551142021 has 32 divisors (see below), whose sum is σ = 5472350208. Its totient is φ = 2006380800.

The previous prime is 3551141999. The next prime is 3551142029. The reversal of 3551142021 is 1202411553.

It is a happy number.

It is not a de Polignac number, because 3551142021 - 2¹⁴ = 3551125637 is a prime.

It is a super-2 number, since 2×3551142021² = 25221219306623928882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3551141982 and 3551142000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551142029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2597080 + ... + 2598446.

It is an arithmetic number, because the mean of its divisors is an integer number (171010944).

Almost surely, 2^3551142021 is an apocalyptic number.

It is an amenable number.

3551142021 is a deficient number, since it is larger than the sum of its proper divisors (1921208187).

3551142021 is a wasteful number, since it uses less digits than its factorization.

3551142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 3551142021 is about 59591.4592957749. The cubic root of 3551142021 is about 1525.6538657670.

Adding to 3551142021 its reverse (1202411553), we get a palindrome (4753553574).

The spelling of 3551142021 in words is "three billion, five hundred fifty-one million, one hundred forty-two thousand, twenty-one".