1742121 has 16 divisors (see below), whose sum is σ = 2608320. Its totient is φ = 1149120.

The previous prime is 1742101. The next prime is 1742161. The reversal of 1742121 is 1212471.

1742121 = T₅₈ + T₅₉ + ... + T₂₁₉.

It is not a de Polignac number, because 1742121 - 2⁹ = 1741609 is a prime.

It is a super-3 number, since 3×1742121³ = 15861936333742912683, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1742094 and 1742103.

It is not an unprimeable number, because it can be changed into a prime (1742101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2766 + ... + 3336.

It is an arithmetic number, because the mean of its divisors is an integer number (163020).

2^1742121 is an apocalyptic number.

It is an amenable number.

1742121 is a deficient number, since it is larger than the sum of its proper divisors (866199).

1742121 is a wasteful number, since it uses less digits than its factorization.

1742121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 687 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 1742121 is about 1319.8943139509. The cubic root of 1742121 is about 120.3259886266.

Adding to 1742121 its reverse (1212471), we get a palindrome (2954592).

The spelling of 1742121 in words is "one million, seven hundred forty-two thousand, one hundred twenty-one".