121702040 has 64 divisors (see below), whose sum is σ = 282506400. Its totient is φ = 47158272.

The previous prime is 121702037. The next prime is 121702051. The reversal of 121702040 is 40207121.

It is a super-2 number, since 2×121702040² = 29622773080323200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297356 + ... + 297764.

Almost surely, 2^121702040 is an apocalyptic number.

121702040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121702040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141253200).

121702040 is an abundant number, since it is smaller than the sum of its proper divisors (160804360).

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

121702040 is a wasteful number, since it uses less digits than its factorization.

121702040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 121702040 is about 11031.8647562413. The cubic root of 121702040 is about 495.5634708492.

Adding to 121702040 its reverse (40207121), we get a palindrome (161909161).

The spelling of 121702040 in words is "one hundred twenty-one million, seven hundred two thousand, forty".