1400434121 has 4 divisors (see below), whose sum is σ = 1474141200. Its totient is φ = 1326727044.

The previous prime is 1400434081. The next prime is 1400434141. The reversal of 1400434121 is 1214340041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1400434121 is a prime.

It is a super-2 number, since 2×1400434121² = 3922431454522085282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1400434093 and 1400434102.

It is not an unprimeable number, because it can be changed into a prime (1400434141) 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, 36853511 + ... + 36853548.

It is an arithmetic number, because the mean of its divisors is an integer number (368535300).

Almost surely, 2^1400434121 is an apocalyptic number.

It is an amenable number.

1400434121 is a deficient number, since it is larger than the sum of its proper divisors (73707079).

1400434121 is an equidigital number, since it uses as much as digits as its factorization.

1400434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73707078.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1400434121 is about 37422.3746039719. The cubic root of 1400434121 is about 1118.8045602179.

Adding to 1400434121 its reverse (1214340041), we get a palindrome (2614774162).

The spelling of 1400434121 in words is "one billion, four hundred million, four hundred thirty-four thousand, one hundred twenty-one".