121401234 has 16 divisors (see below), whose sum is σ = 269780640. Its totient is φ = 40467060.

The previous prime is 121401229. The next prime is 121401299. The reversal of 121401234 is 432104121.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1124032 + ... + 1124139.

It is an arithmetic number, because the mean of its divisors is an integer number (16861290).

Almost surely, 2^121401234 is an apocalyptic number.

121401234 is an abundant number, since it is smaller than the sum of its proper divisors (148379406).

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

121401234 is a wasteful number, since it uses less digits than its factorization.

121401234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248182 (or 2248176 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121401234 is about 11018.2228149552. Note that the first 3 decimals coincide. The cubic root of 121401234 is about 495.1548459546.

Adding to 121401234 its reverse (432104121), we get a palindrome (553505355).

The spelling of 121401234 in words is "one hundred twenty-one million, four hundred one thousand, two hundred thirty-four".