1202938421 has 4 divisors (see below), whose sum is σ = 1203453312. Its totient is φ = 1202423532.

The previous prime is 1202938409. The next prime is 1202938427. The reversal of 1202938421 is 1248392021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1248392021 = 113 ⋅11047717.

It is a cyclic number.

It is not a de Polignac number, because 1202938421 - 2²² = 1198744117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202938427) 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, 253925 + ... + 258618.

It is an arithmetic number, because the mean of its divisors is an integer number (300863328).

Almost surely, 2^1202938421 is an apocalyptic number.

It is an amenable number.

1202938421 is a deficient number, since it is larger than the sum of its proper divisors (514891).

1202938421 is an equidigital number, since it uses as much as digits as its factorization.

1202938421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514890.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1202938421 is about 34683.4026733249. The cubic root of 1202938421 is about 1063.5252339087.

The spelling of 1202938421 in words is "one billion, two hundred two million, nine hundred thirty-eight thousand, four hundred twenty-one".