1403453121 has 16 divisors (see below), whose sum is σ = 2145481728. Its totient is φ = 799390800.

The previous prime is 1403453113. The next prime is 1403453143. The reversal of 1403453121 is 1213543041.

It is a happy number.

It is not a de Polignac number, because 1403453121 - 2³ = 1403453113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1403453091 and 1403453100.

It is not an unprimeable number, because it can be changed into a prime (1403453101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100915 + ... + 113976.

It is an arithmetic number, because the mean of its divisors is an integer number (134092608).

Almost surely, 2^1403453121 is an apocalyptic number.

It is an amenable number.

1403453121 is a deficient number, since it is larger than the sum of its proper divisors (742028607).

1403453121 is a wasteful number, since it uses less digits than its factorization.

1403453121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215212.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1403453121 is about 37462.6897192393. The cubic root of 1403453121 is about 1119.6079412719.

Adding to 1403453121 its reverse (1213543041), we get a palindrome (2616996162).

The spelling of 1403453121 in words is "one billion, four hundred three million, four hundred fifty-three thousand, one hundred twenty-one".