1202115440 has 20 divisors (see below), whose sum is σ = 2794918584. Its totient is φ = 480846144.

The previous prime is 1202115437. The next prime is 1202115457. The reversal of 1202115440 is 445112021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×1202115440³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7513142 + ... + 7513301.

Almost surely, 2^1202115440 is an apocalyptic number.

1202115440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202115440 is an abundant number, since it is smaller than the sum of its proper divisors (1592803144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1202115440 is a wasteful number, since it uses less digits than its factorization.

1202115440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15026456 (or 15026450 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1202115440 is about 34671.5364528312. The cubic root of 1202115440 is about 1063.2826443956.

Adding to 1202115440 its reverse (445112021), we get a palindrome (1647227461).

The spelling of 1202115440 in words is "one billion, two hundred two million, one hundred fifteen thousand, four hundred forty".