121402570 has 8 divisors (see below), whose sum is σ = 218524644. Its totient is φ = 48561024.

The previous prime is 121402543. The next prime is 121402573. The reversal of 121402570 is 75204121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114854089 + 6548481 = 10717^2 + 2559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121402573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6070119 + ... + 6070138.

Almost surely, 2^121402570 is an apocalyptic number.

121402570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121402570 is a deficient number, since it is larger than the sum of its proper divisors (97122074).

121402570 is a wasteful number, since it uses less digits than its factorization.

121402570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12140264.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 121402570 is about 11018.2834416256. The cubic root of 121402570 is about 495.1566623129.

Adding to 121402570 its reverse (75204121), we get a palindrome (196606691).

The spelling of 121402570 in words is "one hundred twenty-one million, four hundred two thousand, five hundred seventy".