425142121 has 8 divisors (see below), whose sum is σ = 427734720. Its totient is φ = 422557872.

The previous prime is 425142101. The next prime is 425142149. The reversal of 425142121 is 121241524.

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

It is a cyclic number.

It is not a de Polignac number, because 425142121 - 2¹⁷ = 425011049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425142092 and 425142101.

It is not an unprimeable number, because it can be changed into a prime (425142101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121036 + ... + 124498.

It is an arithmetic number, because the mean of its divisors is an integer number (53466840).

Almost surely, 2^425142121 is an apocalyptic number.

It is an amenable number.

425142121 is a deficient number, since it is larger than the sum of its proper divisors (2592599).

425142121 is a wasteful number, since it uses less digits than its factorization.

425142121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175.

The product of its digits is 640, while the sum is 22.

The square root of 425142121 is about 20618.9747805268. The cubic root of 425142121 is about 751.9310952644.

Adding to 425142121 its reverse (121241524), we get a palindrome (546383645).

The spelling of 425142121 in words is "four hundred twenty-five million, one hundred forty-two thousand, one hundred twenty-one".