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BaseRepresentation
bin11101100100110110
320011011202
4131210312
512334032
62332502
71013120
oct354466
9204152
10121142
118301a
125a132
13431a8
1432210
1525d62
hex1d936

121142 has 16 divisors (see below), whose sum is σ = 220320. Its totient is φ = 48768.

The previous prime is 121139. The next prime is 121151. The reversal of 121142 is 241121.

It is a super-3 number, since 3×1211423 = 5333416165185864, which contains 333 as substring.

It is a nialpdrome in base 14.

It is a congruent number.

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, 17 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (13770).

2121142 is an apocalyptic number.

121142 is a deficient number, since it is larger than the sum of its proper divisors (99178).

121142 is a wasteful number, since it uses less digits than its factorization.

121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its digits is 16, while the sum is 11.

The square root of 121142 is about 348.0545934189. The cubic root of 121142 is about 49.4802151997.

Adding to 121142 its reverse (241121), we get a palindrome (362263).

The spelling of 121142 in words is "one hundred twenty-one thousand, one hundred forty-two", and thus it is an iban number.