1202145023 has 16 divisors (see below), whose sum is σ = 1244491776. Its totient is φ = 1160547360.

The previous prime is 1202145017. The next prime is 1202145037. The reversal of 1202145023 is 3205412021.

It is a cyclic number.

It is not a de Polignac number, because 1202145023 - 2¹⁴ = 1202128639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202144986 and 1202145004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202145013) 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, 1617590 + ... + 1618332.

It is an arithmetic number, because the mean of its divisors is an integer number (77780736).

Almost surely, 2^1202145023 is an apocalyptic number.

1202145023 is a deficient number, since it is larger than the sum of its proper divisors (42346753).

1202145023 is a wasteful number, since it uses less digits than its factorization.

1202145023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1202145023 is about 34671.9630681621. The cubic root of 1202145023 is about 1063.2913664732.

Adding to 1202145023 its reverse (3205412021), we get a palindrome (4407557044).

The spelling of 1202145023 in words is "one billion, two hundred two million, one hundred forty-five thousand, twenty-three".