1202120405 has 32 divisors (see below), whose sum is σ = 1620725760. Its totient is φ = 850590720.

The previous prime is 1202120399. The next prime is 1202120407. The reversal of 1202120405 is 5040212021.

It is not a de Polignac number, because 1202120405 - 2¹² = 1202116309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202120407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202175 + ... + 208035.

It is an arithmetic number, because the mean of its divisors is an integer number (50647680).

Almost surely, 2^1202120405 is an apocalyptic number.

It is an amenable number.

1202120405 is a deficient number, since it is larger than the sum of its proper divisors (418605355).

1202120405 is a wasteful number, since it uses less digits than its factorization.

1202120405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1202120405 is about 34671.6080532761. The cubic root of 1202120405 is about 1063.2841082569.

Adding to 1202120405 its reverse (5040212021), we get a palindrome (6242332426).

The spelling of 1202120405 in words is "one billion, two hundred two million, one hundred twenty thousand, four hundred five".