1012155434 has 16 divisors (see below), whose sum is σ = 1617954048. Its totient is φ = 473773872.

The previous prime is 1012155433. The next prime is 1012155451. The reversal of 1012155434 is 4345512101.

It is not an unprimeable number, because it can be changed into a prime (1012155433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231917 + ... + 236240.

It is an arithmetic number, because the mean of its divisors is an integer number (101122128).

Almost surely, 2^1012155434 is an apocalyptic number.

1012155434 is a deficient number, since it is larger than the sum of its proper divisors (605798614).

1012155434 is a wasteful number, since it uses less digits than its factorization.

1012155434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468229.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1012155434 is about 31814.3903603385. The cubic root of 1012155434 is about 1004.0355041333.

Adding to 1012155434 its reverse (4345512101), we get a palindrome (5357667535).

The spelling of 1012155434 in words is "one billion, twelve million, one hundred fifty-five thousand, four hundred thirty-four".