1245400149 has 16 divisors (see below), whose sum is σ = 1904515200. Its totient is φ = 709121280.

The previous prime is 1245400147. The next prime is 1245400151. The reversal of 1245400149 is 9410045421.

It is an interprime number because it is at equal distance from previous prime (1245400147) and next prime (1245400151).

It is not a de Polignac number, because 1245400149 - 2¹ = 1245400147 is a prime.

It is a super-2 number, since 2×1245400149² = 3102043062258444402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245400147) 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, 99624 + ... + 111425.

It is an arithmetic number, because the mean of its divisors is an integer number (119032200).

Almost surely, 2^1245400149 is an apocalyptic number.

It is an amenable number.

1245400149 is a deficient number, since it is larger than the sum of its proper divisors (659115051).

1245400149 is a wasteful number, since it uses less digits than its factorization.

1245400149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211340.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1245400149 is about 35290.2273866293. The cubic root of 1245400149 is about 1075.8943770899.

The spelling of 1245400149 in words is "one billion, two hundred forty-five million, four hundred thousand, one hundred forty-nine".